2027 Common BCBA Fieldwork Mistakes That Delay Certification
Co-Founder and Chief Data Scientist
BCBA fieldwork is often where certification timelines slip—not because candidates lack clinical ability, but because hours, supervision, consent, or documentation do not meet review standards. A trainee may complete months of work and still face delays if contracts are unsigned, unrestricted hours are misclassified, supervision contacts are short, or client consent records are incomplete.
This guide explains the fieldwork mistakes that most often delay Board Certified Behavior Analyst certification and how to prevent them before they become application problems. It is written for ABA graduate students, trainees, supervisors, and career changers who want a clearer path from supervised experience to certification. You will learn what counts, what does not, how to document hours, how to evaluate supervision quality, and how to choose fieldwork settings that reduce certification risk.
Key Things You Should Know
- Incomplete or improperly documented Applied Behavior Analysis fieldwork hours cause 40% of BCBA certification delays, emphasizing meticulous record-keeping and supervisor verification are critical in 2026.
- Failing to align fieldwork tasks with BACB's 2024 revised task list results in disqualification, as over 25% of applicants struggle to meet new competence requirements.
- Limited supervisor availability and unclear communication contribute to elongated certification timelines, with many candidates experiencing delays exceeding six months in 2026.
What are common BCBA fieldwork mistakes delaying certification?
The most common BCBA fieldwork mistakes delaying certification are administrative rather than clinical: missing contracts, incomplete logs, misclassified hours, outdated forms, and weak communication between the trainee and supervisor. These errors can make it difficult for reviewers to verify that the experience met BACB expectations, even when the trainee completed substantial fieldwork.
One major problem is missing or improperly signed supervision contracts. In 2025, 28% of BCBA fieldwork applications were rejected for this issue, showing how a basic paperwork error can interrupt the certification timeline. A supervision relationship should be documented before hours are counted, not reconstructed later.
Another frequent mistake is incomplete hour logging. Trainees may record a total number of hours but fail to include the details needed to support the entry, such as session dates, durations, client demographics, activity descriptions, supervision type, and whether the work was restricted or unrestricted. Sparse notes can trigger follow-up requests, audit concerns, or rejected hours.
| Common mistake | Why it delays certification | How to prevent it |
| Unsigned or missing supervision contract | Hours may not be accepted because the supervision relationship is not properly established. | Complete, sign, and store the contract before fieldwork begins. |
| Vague activity descriptions | Reviewers and supervisors cannot determine whether the work qualifies. | Describe the task, setting, purpose, and connection to behavior-analytic practice. |
| Misclassified restricted and unrestricted hours | The trainee may appear not to meet required experience composition. | Review categories with the supervisor before logging recurring activities. |
| Counting unsupported independent work | Hours may be removed if they do not meet supervision requirements. | Confirm in advance which activities can be counted and under what conditions. |
| Outdated forms or personal information | Applications can be returned for correction or clarification. | Use current BACB forms and check names, dates, credentials, and contact details before submission. |
Misunderstanding supervision requirements also causes setbacks. Some candidates count nonqualifying work, assume all ABA-related tasks are acceptable, or wait too long to ask whether an activity should be logged. The safer approach is to clarify questionable hours in writing with the supervisor as they occur.
Final evaluation forms can also create delays if supervisors do not submit or sign them promptly. Candidates should set internal deadlines for monthly reviews, final verification, and application preparation rather than waiting until all hours are complete.
For students still choosing an academic pathway, cost and supervision structure both matter. Comparing the cheapest ABA master's programs online can be useful, but affordability should be weighed alongside access to qualified supervisors, fieldwork support, and documentation guidance.
What is BCBA fieldwork and certification requirements?
BCBA fieldwork is supervised practical experience completed as part of the pathway to Board Certified Behavior Analyst certification. It is designed to show that a candidate can apply behavior-analytic principles in real settings, under qualified supervision, before practicing independently.
Fieldwork may take place in clinics, schools, homes, community programs, or other approved service environments. The work should help candidates build competence in assessment, intervention planning, data-based decision-making, ethical practice, caregiver or staff training, and supervision-related skills.
The Behavior Analyst Certification Board (BACB) sets standards for supervision, documentation, and the types of experience that may count. Recent BACB updates increased the minimum ratio of unrestricted hours from 50% to 60%. This change makes hour planning more important because candidates who accumulate too many restricted hours early may need additional time to correct the balance.
Unrestricted hours generally involve higher-level behavior-analytic work, such as assessment activities, intervention design, data interpretation, and other tasks that develop the skills expected of a BCBA. Restricted hours usually involve more direct implementation or support activities. Both can be valuable, but candidates must monitor the required balance throughout fieldwork.
| Requirement area | What candidates should verify | Common pitfall |
| Supervisor qualification | The supervisor is properly credentialed and eligible to supervise. | Assuming a workplace manager automatically qualifies as a fieldwork supervisor. |
| Hour categories | Restricted and unrestricted hours are tracked separately. | Logging all ABA-related work in one general category. |
| Supervision frequency | Meetings, observations, and feedback occur consistently. | Trying to make up supervision after hours have already accrued. |
| Documentation | Forms, contracts, logs, and evaluations are complete and current. | Waiting until application time to find missing signatures or unclear entries. |
Common forms of fieldwork include practicum and concentrated fieldwork, each with specific hour allocations and documentation expectations. Problems often arise when candidates do not understand which pathway they are following or when their site uses informal terminology that does not match BACB categories.
The practical sequence is straightforward: confirm eligibility, secure qualified supervision, sign the supervision agreement, track hours accurately, maintain the required unrestricted and restricted balance, complete regular reviews, and retain all supporting records. Candidates should not rely on memory, screenshots, or informal messages as their primary evidence.
Prospective students should compare BCBA accredited programs not only by format and tuition, but also by how clearly they explain fieldwork planning, supervision expectations, and documentation procedures.
How many supervised hours are required for BCBA fieldwork?
The Behavior Analyst Certification Board (BACB) requires candidates to complete at least 1,500 supervised fieldwork hours to qualify for BCBA certification. These hours must be completed under the direct supervision of a qualified BCBA or BCBA-D. The total number matters, but the composition of those hours matters just as much.
BCBA fieldwork hours are commonly discussed in two categories: unrestricted and restricted. Unrestricted hours involve applied behavior analysis tasks that develop higher-level professional skills, such as assessment, intervention planning, data analysis, client programming, and supervision-related responsibilities. Restricted hours include activities that are useful but do not carry the same weight toward independent BCBA readiness.
A recent ABAI workforce survey of 1,200 BCBA candidates found that trainees with less than 60% unrestricted hours took 25% longer to complete fieldwork, averaging 2,500 hours versus 2,000 hours for those meeting the threshold. The lesson is practical: candidates who do not manage the unrestricted-hour ratio early may complete many hours that do not move them efficiently toward certification.
| Hour-planning priority | Why it matters | Action to take |
| Maintain at least 60% unrestricted hours | Falling below the expected balance can extend the timeline. | Review the ratio monthly instead of waiting until the end. |
| Verify supervisor eligibility | Hours may be questioned if supervision is not valid. | Confirm the supervisor’s credential status before counting hours. |
| Separate restricted and unrestricted entries | Mixed logs are harder to verify and correct. | Use distinct columns or categories for every entry. |
| Choose settings with direct ABA opportunities | Some placements produce mostly restricted or repetitive tasks. | Ask what unrestricted activities trainees are allowed to perform. |
Candidates should avoid treating the hour requirement as a simple countdown. A more reliable approach is to build a monthly fieldwork dashboard showing total hours, unrestricted hours, restricted hours, supervision contacts, observations, supervisor approvals, and any unresolved documentation questions.
If a placement does not provide enough unrestricted opportunities, candidates should raise the issue early. Possible solutions include additional assessment work, data-analysis projects, treatment-plan revisions, caregiver training preparation, or supervised program development when appropriate and approved by the supervisor.
Students who need flexibility often compare accredited ABA master's programs online to coordinate graduate coursework with fieldwork. Speed should not be the only factor; the program should also help students understand hour categories and supervision documentation.
Valid BCBA fieldwork supervision requires more than a supervisor’s name on a form. It must involve consistent, meaningful oversight from a qualified supervisor who observes, reviews, guides, and evaluates the trainee’s behavior-analytic work.
BACB fieldwork supervision requirements in the US mandate direct interaction between the trainee and a BACB-approved supervisor. Supervision must comprise at least 5% of total client-contact hours per month and should focus on performance feedback, programming skills, ethical decision-making, data review, and professional judgment. Simply logging client hours without active supervision does not meet the purpose of fieldwork.
For example, a trainee with 100 client-contact hours monthly must receive at least 5 hours of supervision. Those hours should not be treated as a casual check-in. They should include review of work samples, observation or video review when appropriate, discussion of clinical decisions, correction of errors, and clear next steps.
Supervision can occur face-to-face, through telehealth, or through video review when the supervisor can meaningfully observe performance and provide feedback. Group supervision may be acceptable only when used appropriately and not as a substitute for individualized review of the trainee’s competencies.
| Valid supervision element | What it should include | Warning sign |
| Qualified supervisor | Current BCBA certification and listing on the BACB registry. | The trainee cannot verify the supervisor’s credential status. |
| Regular meetings | Planned supervision sessions with documented dates and content. | Supervision happens only when the trainee asks for signatures. |
| Performance feedback | Specific comments on assessments, interventions, data, ethics, and professional skills. | Feedback is vague, delayed, or limited to “looks good.” |
| Observation | Direct, telehealth, or recorded review that allows the supervisor to evaluate practice. | The supervisor never observes or reviews actual service delivery. |
According to the 2025 BACB Fieldwork Compliance Analysis, only 42% of trainees met the 5% monthly supervision minimum during their first year, causing an average certification delay of three months. This finding shows why candidates should track supervision requirements as carefully as total fieldwork hours.
Trainees should keep a supervision log that records the date, length, format, supervisor, topics covered, feedback received, and action items. They should also confirm that monthly supervision minimums are met before the month closes, because retroactive correction can be difficult.
For students comparing flexible graduate options, the best online ABA master's programs should be evaluated for how well they help students understand valid supervision, not just whether coursework can be completed remotely.
To track BCBA fieldwork hours correctly, candidates should record hours in real time or shortly after each activity, classify every entry accurately, and obtain regular supervisor review. Waiting until the end of the week—or worse, the end of the month—creates avoidable errors.
A 2025 Journal of Applied Behavior Analysis study found that weekly tracking reduced restricted hour over-accrual by 35%, helping candidates stay within the 2,000 total hour limit. The practical takeaway is that frequent review helps candidates identify imbalance before it becomes a timeline problem.
A strong fieldwork log should do more than count time. It should explain what the trainee did, why the activity was behavior-analytic, how it was supervised, and how it fits the restricted or unrestricted category. Entries should be specific enough that a supervisor can verify them later without relying on memory.
| Documentation field | What to include | Why it matters |
| Date and time | Exact date, start time, end time, and duration. | Prevents math errors and overlapping entries. |
| Activity type | Assessment, intervention, data analysis, supervision, training, or other approved task. | Supports correct classification. |
| Restricted or unrestricted category | Clear category assigned to each entry. | Helps monitor required hour balance. |
| Client or case identifier | A confidential identifier rather than unnecessary personal details. | Connects the activity to fieldwork while protecting privacy. |
| Supervisor verification | Review date, approval, comments, or corrections. | Creates a record of oversight and reduces later disputes. |
Common documentation problems include missing signatures, unclear notes, inconsistent time calculations, and mixing restricted and unrestricted tasks in one entry. Candidates should not round loosely, copy generic descriptions, or assume the supervisor will correct every error at the end.
Best practices include:
- Log hours daily or weekly rather than reconstructing them from calendars.
- Use separate fields for supervision, assessment, intervention, and other activities.
- Identify restricted hours clearly, including administrative or training-related work when applicable.
- Submit logs for supervisor review on a predictable schedule.
- Keep copies of signed contracts, monthly forms, evaluations, and supporting records.
Digital tools can help when they allow timestamps, activity descriptions, category tracking, and supervisor feedback. A spreadsheet can also work if it is organized, backed up, and reviewed consistently. The tool matters less than the accuracy, completeness, and supervisor verification of the record.
BCBA fieldwork client consent errors usually occur when trainees begin services, observations, recordings, or data-related activities without clear, documented, and current permission from the client or legal guardian. These mistakes can create ethical concerns, invalidate hours, and lead supervisors to reject activities that otherwise might have counted.
A common error is relying on verbal agreement without a signed and dated consent form. Another is using outdated consent language that does not explain the trainee’s role, the nature of behavior-analytic services, confidentiality expectations, data use, observation procedures, or the client’s right to ask questions or decline participation.
Consent should also be updated when the scope of services changes. If treatment goals, intervention methods, assessment procedures, observation formats, or trainee responsibilities change materially, the original consent may no longer be sufficient. Trainees should ask supervisors when renewed consent is needed rather than assuming one form covers every future activity.
| Consent error | Potential consequence | Prevention step |
| No signed, dated consent | Hours or activities may be disallowed during review. | Obtain written approval before services or observations begin. |
| Unclear trainee role | Clients may not understand who is providing services and under what supervision. | State the trainee’s role, supervisor involvement, and limits of independent authority. |
| Outdated form | The documentation may not reflect current services or expectations. | Review consent forms when goals, methods, or settings change. |
| Vague authorized activities | Supervisors may reject logged activities that were not clearly permitted. | Specify services, observation, data collection, and related trainee activities. |
Audit reports show that 18% of fieldwork logs incorrectly include non-qualifying activities like administrative tasks, leading to average losses of 450 hours per trainee. This can happen when consent records and fieldwork logs do not clearly show which activities were authorized and behavior-analytic.
To reduce risk, candidates should keep consent records organized by client or case, use current forms approved by the site and supervisor, and document when consent was obtained, renewed, or limited. Supervisors should review consent procedures early in the placement, not after hours have accumulated.
Good consent practices protect clients first. They also protect trainees by creating a clear record that services, observations, and data-related activities were ethical, authorized, and properly supervised.
To avoid supervision contact hour mistakes, candidates should calculate supervision requirements monthly, document every supervision session precisely, and reconcile their records with the supervisor before submitting forms. Most errors are preventable when hours are reviewed while they are still fresh.
According to BACB's annual verification statistics, 22% of BCBA certification denials in Q4 2025 were due to errors in record-keeping, with math discrepancies leading these issues. That means candidates should treat time calculations as a compliance task, not a clerical afterthought.
Each supervision entry should include the date, start and end time, total duration, supervisor name, format, participants, topics covered, feedback provided, and whether the session was individual or group supervision. The log should also distinguish supervision contact from independent work, client service, administrative tasks, and non-countable activities.
| Mistake | Why it happens | How to avoid it |
| Rounding supervision time | Candidates estimate instead of recording actual start and end times. | Use exact times and calculate duration consistently. |
| Counting non-contact tasks as supervision | Administrative communication is confused with qualifying supervision. | Ask the supervisor which contacts count before logging them. |
| Mixing group and individual supervision | Logs do not identify the format clearly. | Create separate fields for supervision type. |
| Monthly minimum not met | Hours are reviewed after the month closes. | Check supervision totals before the final week of each month. |
| Supervisor records do not match trainee records | Both parties maintain separate logs without reconciliation. | Compare records during scheduled monthly reviews. |
Candidates should use a template approved by their supervisor, university, or fieldwork site. Templates reduce errors by forcing the trainee to enter the information needed for verification. If a digital tool is used, candidates should still export or back up records regularly.
When rules are unclear, trainees should not guess. They should ask the supervisor, consult official BACB resources, and document the answer if it affects recurring activities. This is especially important for questions about group supervision, video review, indirect work, and activities that occur outside direct client sessions.
Before submitting documentation, candidates should check for digit transpositions, missing dates, inconsistent totals, unsigned entries, and mismatches between monthly and cumulative hour counts. A short monthly audit is far easier than repairing a full fieldwork record after an application problem appears.
Insufficient BCBA fieldwork diversity can leave candidates underprepared for the range of clients, settings, behaviors, and ethical situations they may encounter after certification. A trainee who works in only one setting or with one narrow client profile may complete hours but still lack the adaptability expected of a beginning BCBA.
Diversity in fieldwork can include different age groups, diagnoses, cultural and linguistic backgrounds, service settings, behavior topographies, assessment methods, intervention models, and caregiver or staff-training needs. The goal is not variety for its own sake; it is to build clinical judgment across real-world conditions.
Limited exposure can weaken baseline data collection and treatment planning. For example, BCBAs who work mainly with one age group or diagnostic category may miss patterns that appear in other populations, choose interventions that do not fit the context, or overlook environmental variables that affect behavior.
Data from new BCBAs in 2025 show a 31% higher rate of intervention failure linked to inadequate baseline data, alongside 15% lower client progress. These findings illustrate how narrow fieldwork experience can affect clinical outcomes, not just certification paperwork.
| Area of limited diversity | Possible consequence | Better fieldwork exposure |
| Single age group | Difficulty adapting assessments and interventions across developmental stages. | Experience with children, adolescents, or adults when available and appropriate. |
| Single setting | Strategies may not generalize beyond one clinic, school, home, or community context. | Supervised work across multiple service environments. |
| Single behavior profile | Limited repertoire for complex or co-occurring behavior concerns. | Cases involving varied behavioral presentations and support needs. |
| Limited cultural context | Interventions may not align with family priorities, communication styles, or environmental realities. | Supervision that addresses culturally responsive assessment and treatment planning. |
Common practical consequences include:
- Reduced clinical adaptability when encountering new or co-morbid conditions.
- Difficulty applying skills from uniform settings to diverse real-world cases.
- Increased supervision hours to correct errors from limited experience.
- Lower client engagement due to poorly matched interventions.
Prospective BCBAs should ask fieldwork sites what populations they serve, what tasks trainees perform, and whether rotations or varied cases are available. Supervisors can support diversity by assigning trainees to schools, homes, clinics, and diagnostic groups such as autism spectrum disorder, intellectual disabilities, and ADHD when appropriate.
A narrow placement is not automatically disqualifying, but candidates should recognize its limits. If one site cannot provide sufficient variety, they may need supplemental supervised experiences, additional case exposure, or more intentional supervision discussions to strengthen generalization.
Poor fieldwork documentation delays BCBA applications because it makes the candidate’s experience difficult to verify. If records are incomplete, inconsistent, vague, or mathematically incorrect, the Behavior Analyst Certification Board (BACB) may request clarification, hold the application, or reject certain hours.
Common documentation problems include missing dates, unclear session times, vague client goals, insufficient descriptions of measurement procedures, and incomplete notes about intervention fidelity. These gaps make it harder to confirm whether the candidate completed qualifying supervised experience and whether the work reflected behavior-analytic practice.
The BACB Exam Performance Report 2025 showed a drop in the first-time BCBA exam pass rate to 62%, down from 68%, largely due to mistakes in ethics and measurement sections. Fieldwork documentation and exam readiness are connected: careful logs reinforce the same habits candidates need for ethical analysis, accurate measurement, and data-based decision-making.
| Documentation weakness | Application risk | Better practice |
| Missing or inconsistent dates | Hours may not align with supervision periods. | Record dates immediately and reconcile monthly totals. |
| Vague activity descriptions | Reviewers cannot determine whether the activity qualifies. | Describe the behavior-analytic purpose of each entry. |
| Unclear measurement strategy | Data quality and competency may be questioned. | Identify what was measured and how data were collected. |
| No supervisor review trail | Entries may appear unsupported. | Document supervisor feedback, approval, and corrections. |
Applicants should follow a consistent documentation routine:
- Keep detailed daily logs specifying goals, activities, interventions, and outcomes.
- Use consistent, standardized data collection tools.
- Conduct routine reviews with supervisors for completeness and accuracy.
- Correct errors as soon as they are found rather than saving them for the final application.
- Retain signed forms, contracts, evaluations, and supervisor communications in an organized file.
Good documentation reduces back-and-forth during application review. It also gives candidates concrete examples to study when preparing for exam questions involving measurement, ethics, assessment, and intervention decisions.
The biggest mistake is assuming that completed work automatically equals accepted work. For certification purposes, experience must be both completed and documented in a way that can be verified.
How to choose BCBA fieldwork programs avoiding certification pitfalls?
Choose BCBA fieldwork programs by evaluating supervision quality, documentation systems, client and setting diversity, and alignment with BACB requirements. A program that helps candidates accumulate hours but does not teach them how to document, classify, and review those hours can create certification risk.
Start by asking how the program handles supervision contracts, monthly reviews, final verification, restricted and unrestricted hour tracking, and interobserver agreement (IOA). In 65% of BCBA supervision reviews, unspecified IOA methods were cited, leading to invalid data in 40% of cases and delaying certification by an average of two months, according to Praxis Notes 2025 Compliance Audit. Programs should be able to explain their IOA procedures clearly.
Supervisors should be Board Certified Behavior Analysts with relevant experience, adequate availability, and a record of giving specific performance feedback. Candidates should avoid arrangements where supervision is informal, irregular, or treated mainly as signature collection.
| What to ask before enrolling or accepting placement | Strong answer | Red flag |
| Who supervises fieldwork? | Named BCBA supervisors with clear roles and availability. | “We will assign someone later” or unclear credential status. |
| How are hours tracked? | Templates or systems that separate restricted, unrestricted, supervision, and client-contact activities. | Informal spreadsheets with no review process. |
| How often are logs reviewed? | Regular reviews with corrections and documented feedback. | Review occurs only at the end of fieldwork. |
| How is IOA handled? | Written procedures, examples, and supervisor review of calculations. | No defined IOA method or inconsistent use. |
| What populations and settings are available? | Exposure to varied clients, behaviors, and service environments when possible. | Only one narrow type of case with no plan for broader learning. |
Request sample paperwork before committing, including supervision contracts, session note templates, hour logs, IOA calculation sheets, and final evaluation procedures. Transparent programs should be willing to explain how their documents align with audit expectations.
Also clarify timelines. Ask how long supervisor reviews usually take, how final forms are processed, what happens if a supervisor leaves, and how documentation disputes are handled. These operational details can determine whether fieldwork ends smoothly or becomes a months-long administrative problem.
The best fieldwork programs do more than provide hours. They help trainees develop sound clinical judgment, ethical habits, accurate measurement skills, and a defensible documentation record. Candidates should choose the placement that reduces certification risk while building the competence they will need as practicing BCBAs.
Other Things You Should Know About Applied Behavior Analysis
Inconsistent or infrequent supervision meetings can delay BCBA certification. It's crucial to adhere to the BACB's specified ratio of supervision hours to fieldwork hours. Additionally, failing to document these meetings accurately can prolong the certification process.
No, a master's degree or higher in a relevant field is a mandatory requirement to be eligible for BCBA certification. The degree must include graduate-level coursework in applied behavior analysis or a related discipline approved by the Behavior Analyst Certification Board. Without the appropriate academic credentials, candidates cannot proceed to supervised fieldwork or the certification exam.
Missing signatures, incomplete supervision logs, and inaccurate monthly summaries can cause fieldwork hours to be rejected. The Behavior Analyst Certification Board requires detailed records for supervised fieldwork, including dates, hours, activities, and supervisor verification, and it can audit these records before you sit for the BCBA exam.
Yes, BCBA certification is nationally recognized across the United States, allowing professionals to practice in different states. However, some states may have additional licensure requirements beyond BCBA certification for independent practice. It is important for candidates to check specific state regulations to ensure full compliance.
- BCBA Fieldwork Documentation Audit Guide: Key Tips | Praxis Notes https://www.praxisnotes.com/resources/bcba-fieldwork-audit-guide
- Common BCBA Fieldwork Mistakes That Can Delay Certification https://www.abaresourcecenter.com/post/common-bcba-fieldwork-mistakes
- 7 BACB Fieldwork Compliance Mistakes | ABA Fieldwork Tracker https://abafieldworktracker.com/resources/articles/fieldwork-compliance-mistakes/
- The Easiest Way to Track ABA Fieldwork Hours https://ripleyfieldworktracker.com/
- BCBA Fieldwork Requirements Made Simple: From Start to Certification - Online ABA Programs https://onlineabaprograms.org/become-a-bcba/fieldwork-requirements/
- How to Prepare for a BACB Fieldwork Audit (14-Day Checklist) https://trackmybcba.com/resources/bcba-audit-preparation
- How To Become A Board Certified Behavior Analyst (BCBA) | Grateful Care ABA https://www.gratefulcareaba.com/blog/how-to-become-a-board-certified-behavior-analyst
- Tracking BCBA Supervision Hours: Your Complete Guide to Fieldwork Compliance and Experience Documentation https://www.operationsarmy.com/post/tracking-bcba-supervision-hours-your-complete-guide-to-fieldwork-compliance-and-experience-document
- BCBA Fieldwork in Diverse Settings: Clinic, School, Home, & Community https://hoomhouse.com/blog/bcba-fieldwork-in-diverse-settings-clinic-school-home-community
- BCBA Fieldwork Supervision https://prepxam.com/courses/bcba-concentrated-fieldwork-supervision
