2027 Becoming an SLP With a Biology Degree: Which Prerequisites Will You Still Need?
Co-Founder and Chief Data Scientist
Reviewed by Rhea Paul, PhD
SLP Education & Research Expert
A biology degree can be an excellent foundation for speech-language pathology, but it rarely covers every course required for SLP graduate admission. The missing pieces are usually communication sciences and disorders (CSD) courses rather than science.
This guide helps biology majors identify likely gaps, compare leveling and post-baccalaureate options, verify licensure implications, and build an application timeline that does not delay entry into a master's program.
Key Things You Should Know
- A biology bachelor's degree commonly satisfies part of the science background expected by SLP programs, but most applicants still need several CSD leveling courses, including speech and hearing science, phonetics, language development, and audiology.
- ASHA foundational-course expectations generally include biological science, physical science, statistics, and social/behavioral science; graduate programs may interpret course equivalencies more narrowly than a biology department does.
- SLPs had a median annual wage of $97,870 in May 2025, and BLS projects 17% employment growth from 2025 to 2035, making careful prerequisite planning worthwhile before investing in graduate school.
What SLP prerequisites are typically missing when you start with a bachelor's in biology?
Biology majors usually arrive with useful coursework in life sciences, research methods, and sometimes statistics. However, a biology curriculum is designed around living systems rather than human communication, language, hearing, and clinical assessment. As a result, the largest gaps are typically in undergraduate communication sciences and disorders coursework.
Many master's programs accept students without a CSD bachelor's degree, but they require applicants either to complete prerequisite courses before enrollment or to take a built-in leveling sequence. Requirements vary substantially by university, so a biology degree alone should not be treated as evidence that all prerequisites are complete.
The following comparison shows the coursework biology graduates commonly have versus the areas they may need to add.
| Requirement area | Often included in a biology degree | Common remaining need for SLP admission |
| Biological science | Usually yes, through general biology, human biology, genetics, or related coursework | Course review may be needed if the class is highly specialized or lacks a clear biology designation |
| Physical science | Sometimes, through general chemistry or physics | Students may need chemistry or physics if neither was completed |
| Statistics | Sometimes, especially in research-focused programs | A standalone statistics course may be required if research methods did not include statistical analysis |
| Social or behavioral science | Often available through general education requirements | Psychology, sociology, or a comparable approved course may be needed |
| CSD core content | Rarely included | Usually requires multiple courses in speech, language, hearing, development, and disorders |
For a student who wants the broadest choice of graduate schools, completing standalone CSD prerequisites before applying can be more flexible than applying only to programs with integrated leveling. In contrast, a student who prefers one coordinated curriculum may find a leveling master's route more practical, even if it takes longer.
Which ASHA science and communication disorders courses must biology majors still complete?
For certification preparation, ASHA expects graduate programs to verify foundational knowledge in biological science, physical science, statistics, and social/behavioral science. These are distinct from the CSD prerequisite courses that individual graduate programs commonly require. Meeting ASHA's foundational areas does not automatically meet a university's admissions curriculum.
A biology degree often covers biological science, but students should verify the other three areas course by course. A psychology course may satisfy social/behavioral science, for example, while a research methods course may or may not be accepted as statistics. The receiving program makes the final equivalency decision.
Graduate CSD programs frequently ask out-of-field applicants to complete the following foundational professional coursework. Course titles differ, but the underlying content is often similar.
- Introduction to communication sciences and disorders or an overview of speech-language pathology and audiology.
- Phonetics, including transcription and speech-sound classification.
- Speech science or anatomy and physiology of the speech, hearing, and swallowing mechanisms.
- Hearing science and introductory audiology.
- Language development across the lifespan.
- Speech and language disorders in children and adults.
- Research methods, clinical observation, or other courses required by the individual program.
Some programs require only a subset before admission and teach the remainder during the first year. Others expect nearly all of these courses before the application deadline. Before registering, obtain written confirmation from each target program that a planned course will count; matching a course title alone is not enough.
How do state SLP licensure and graduate program prerequisite lists differ for biology graduates?
Graduate admission requirements, ASHA certification standards, and state licensure rules serve different purposes. A university decides whether you are academically prepared to enter its master's curriculum. A state licensing board decides whether you may legally practice in that state. ASHA certification is a separate professional credential that many employers value and many state pathways incorporate, but it is not identical to a state license.
For most aspiring clinicians, the decisive educational requirement is graduating from a master's program accredited by the Council on Academic Accreditation in Audiology and Speech-Language Pathology (CAA), then completing applicable examination and post-graduate clinical requirements. A biology degree does not change that end goal; it changes the route to graduate admission.
This distinction helps prevent a common error: assuming a school's admission checklist is the full licensure checklist.
| Decision-maker | Primary question | What a biology graduate should verify |
| Graduate program | Are you ready for this curriculum? | Exact CSD prerequisites, minimum grades, transcript evaluation process, and whether leveling is offered |
| CAA accreditation | Does the graduate program meet accreditation standards? | Current accreditation status, including whether the specific master's program - not merely the institution - is CAA-accredited |
| ASHA certification pathway | Have certification standards been met? | Foundational coursework, graduate clinical education, Praxis requirements, and clinical fellowship expectations |
| State licensing board | May you practice in this state? | State-specific education, examination, supervised experience, background-check, and continuing-education rules |
Licensure rules can change, and online enrollment eligibility can be state-specific. If you may move after graduation, check both the state where you expect to study and the state where you expect to seek initial licensure. Do not rely solely on a general statement that a program "prepares students for licensure."
They may help, but they are not automatic substitutes for all SLP prerequisites. General anatomy, human physiology, neurobiology, and neuroscience can be highly relevant preparation for swallowing, motor speech, voice, and neurogenic communication disorders. Yet an admissions committee may still require a course specifically focused on speech, hearing, language, or swallowing mechanisms.
The key question is not whether a biology course was difficult or medically oriented. It is whether its official description, learning outcomes, and transcript designation meet the particular requirement being reviewed. For example, a general human anatomy course may support your background, while a program may still require speech and hearing anatomy because it addresses laryngeal, respiratory, articulatory, auditory, and neural systems in communication-specific ways.
Use this practical rule when evaluating possible equivalents:
- Count a course as likely useful when its transcript title and catalog description clearly identify the required discipline, such as biology, chemistry, physics, psychology, sociology, or statistics.
- Request a formal review when a course is interdisciplinary, unusually titled, advanced, or embedded within a broader research course.
- Do not self-substitute neuroscience for a required speech science, phonetics, audiology, or language development course unless the graduate program approves it in writing.
Keep course descriptions and syllabi, especially for older classes or courses with vague titles such as "Research Applications" or "Integrated Science." They can help an admissions office determine equivalency, but they do not obligate a school to grant credit.
Leveling courses are undergraduate or bridge-level CSD classes designed for students whose bachelor's degree is outside communication sciences. They build the vocabulary and conceptual base that a CSD major would normally acquire before graduate study. Biology majors often perform well in science-heavy material, but the clinical and linguistic content is still new.
Programs organize these requirements differently. Some expect completion before admission, some admit students conditionally with a sequence of prerequisites, and some package leveling courses into an extended master's curriculum. The right option depends on your target schools, timeline, budget, and willingness to limit your application choices.
| Pathway | How it works | Best fit | Main trade-off |
| Complete prerequisites before applying | Take required CSD courses as a nondegree or post-baccalaureate student, then apply to standard master's programs | Students seeking the widest range of programs and clearer readiness before applying | May add time before graduate enrollment and requires coordinating multiple course providers |
| Formal post-baccalaureate CSD program | Complete a structured sequence of undergraduate CSD coursework | Students who want advising, cohort structure, and a documented academic pathway | Availability, cost, and course-transfer acceptance vary by institution |
| Integrated leveling master's program | Finish prerequisites as part of an extended graduate plan | Students who want one admissions process and a single institution | Usually means a longer program and fewer schools to choose from |
If completing prerequisites separately, take them in a logical order. Introductory CSD content, phonetics, and language development often make later disorders and assessment courses easier to understand. Do not assume an accelerated sequence is inherently better, it must still leave enough time to earn strong grades and prepare competitive applications. Students considering SLP accelerated programs should confirm whether acceleration applies to the clinical master's curriculum, prerequisite coursework, or both.
Create a separate prerequisite map for every program on your list. One school may accept general psychology for a social/behavioral science requirement, while another may require a particular developmental psychology course. A single master spreadsheet can organize the work, but it should not replace each program's published admissions instructions.
Start with your unofficial transcript, catalog descriptions from the terms in which you took each course, and the target program's current checklist. Then follow this sequence before paying for additional classes.
- List every completed biology, chemistry, physics, statistics, psychology, sociology, linguistics, anatomy, physiology, and neuroscience course with credits and final grade.
- Separate ASHA foundational areas from CSD admission prerequisites so you do not mistake one category for the other.
- Mark each item as clearly met, possibly equivalent, missing, or pending formal review for each target school.
- Email admissions offices concise equivalency questions with the course title, catalog description, credits, and term; retain written responses.
- Choose courses that satisfy the greatest number of target programs, then recheck requirements before submitting applications.
Use official program materials rather than informal student forums when there is a conflict. Requirements can differ by cohort and may change after catalog updates. If a program will not pre-evaluate courses before application, plan conservatively and select clearly titled, regionally accredited coursework whenever possible.
Biology graduates can complete missing coursework through a university nondegree option, a formal post-baccalaureate CSD program, a second bachelor's degree, or an integrated leveling master's program. The strongest choice is the one accepted by your target graduate schools - not necessarily the fastest or lowest advertised-cost option.
Online prerequisite study can work well for students who need scheduling flexibility, especially for lecture-based courses such as phonetics, language development, and introductory audiology. However, schools may have limits on transferred credits, minimum grades, lab formats, or the age of prior coursework. Confirm acceptance before enrolling and make sure your enrollment status permits access to advising and transcripts on time.
These options involve different practical trade-offs.
| Option | Potential advantage | Potential limitation |
| Nondegree university courses | Lets you take only the courses you lack | Registration priority, financial aid access, and course availability may be limited |
| Formal post-baccalaureate CSD program | Provides a planned sequence and specialized advising | May include courses you already completed and can require a fixed schedule |
| Second bachelor's degree in CSD | Offers broad foundational preparation and campus resources | Often takes longer than needed for students with many transferable credits |
| Integrated leveling master's program | Combines entry pathway and graduate degree at one institution | May reduce flexibility to change schools later |
When researching online masters speech pathology programs, distinguish between a program that is online and one that accepts applicants without a CSD degree. Clinical placements, required campus experiences, and state authorization remain important even when academic courses are delivered remotely.
Cost comparisons should include more than tuition per credit. Ask whether prerequisites are charged at undergraduate or graduate rates, whether technology and student fees apply, whether financial aid is available to nondegree students, and whether you would need to repeat a course after a graduate-school review.
Prerequisite grades matter because they provide direct evidence of readiness in a field that may be new to biology graduates. A strong overall biology GPA is valuable, but it may not offset weak performance in phonetics, language development, statistics, or other required CSD coursework. Each program sets its own minimum GPA and may use a separate calculation for prerequisite courses.
Recency policies are less uniform. Some schools review older prerequisites individually, particularly in quickly evolving clinical areas, while others do not publish a strict expiration period. If you completed relevant courses many years ago, ask whether they remain acceptable and whether refresher work is advisable. Do not repeat a course solely because it is old unless a target program requires or recommends it.
Lab requirements also deserve careful review. A biology lab may be relevant to a biological-science foundation requirement, but it generally does not replace a CSD course that includes discipline-specific applied content. Likewise, a virtual lab format may be acceptable at one institution and questioned by another.
To strengthen an application, focus on the evidence schools can actually evaluate:
- Earn the highest grades possible in the required CSD sequence rather than overloading yourself with too many prerequisites at once.
- Use official transcripts that clearly show course credits, final grades, and institution information.
- Explain an academic trend briefly and factually if a past grade does not reflect your current readiness.
- Seek observation, volunteer, research, or relevant support experiences only after ensuring they do not undermine prerequisite performance.
Admissions remains competitive and holistic at many schools. Strong prerequisites improve academic readiness, but they do not guarantee admission, financial aid, clinical placement availability, or later licensure.
Choose a prerequisite route with the end credential in mind: a CAA-accredited graduate SLP program. Prerequisite providers themselves are not CAA-accredited in the same way that entry-level graduate clinical programs are, but their courses must be acceptable to the master's programs where you intend to apply.
A high-quality path is not defined only by convenience. It should offer transparent course descriptions, identifiable faculty, reliable transcript records, academic support, and a curriculum that aligns with multiple target programs. If a provider makes broad promises that its courses are accepted "everywhere," treat that as a reason to verify rather than as proof.
Before committing to a program, use the following quality checks:
- Verify the master's program's current CAA accreditation status and confirm it is the specific degree that leads toward clinical SLP practice.
- Review state authorization and professional licensure disclosures if you will study online or complete clinical placements outside the institution's home state.
- Ask whether the program will evaluate your prior biology coursework before enrollment and whether approval is documented.
- Compare the full sequence, expected pacing, transfer-credit rules, withdrawal policies, and total charges - not just the per-credit price.
- Confirm how the program supports clinical placements, required in-person experiences, and graduate progression after leveling coursework.
Program quality also matters because clinical education is regulated and resource-intensive. The BLS projects about 12,500 SLP openings per year on average from 2025 to 2035, but favorable national demand does not remove the need to choose a program compatible with your intended state and professional goals. For career context beyond the national median, review how much do speech pathologists make and consider how setting, location, experience, and licensure affect earnings.
How can pre-SLP biology students avoid common prerequisite gaps and application-cycle delays?
The most avoidable delay is discovering too late that target schools define the same requirement differently. Biology students can reduce this risk by planning at least one full course-registration cycle ahead and by maintaining a list of schools rather than tailoring every decision to a single program.
Common problems usually stem from assumptions, not from the biology degree itself. A science background is an asset, particularly for anatomy, physiology, research literacy, and evidence-based practice, but it does not eliminate the need for field-specific coursework.
| Common mistake | Why it creates a problem | Better approach |
| Assuming biology automatically covers all ASHA foundations | Physical science, statistics, or social/behavioral science may be missing or rejected as non-equivalent | Audit each foundational area against each target program's instructions |
| Taking inexpensive prerequisites without preapproval | A course may not transfer or may lack required content | Request written confirmation before enrollment whenever possible |
| Applying before all requirements are complete | Some programs will not consider planned courses or may impose conditions | Check whether in-progress prerequisites are allowed and note completion deadlines |
| Ignoring state and clinical-placement restrictions for online study | Distance learning does not guarantee authorization or placement eligibility in every state | Read the school's state authorization and licensure disclosures before applying |
| Choosing a path only because it is short | Fast pacing can weaken grades or restrict future program choices | Select a sustainable pace that supports strong academic performance |
A practical next step is to identify five to eight realistic graduate programs, build your transcript map, and group missing courses by how broadly they transfer. If flexibility is your priority, compare online speech language pathology programs only after confirming accreditation, eligibility in your state, prerequisite structure, and clinical requirements. This approach protects your options while helping you make efficient use of your biology background.
Other Things You Should Know About Speech Language Pathology
Sometimes. Many programs allow a limited number of prerequisites to be in progress, but they may require completion before enrollment and may specify a minimum grade. Check each school's policy because some require all courses to be finished before the application is reviewed.
No. A second bachelor's degree is one option, not a universal requirement. Many biology graduates complete only missing CSD prerequisites through nondegree study, a post-baccalaureate program, or an integrated leveling master's pathway.
Most SLP programs ask for at least one course each in biology, statistics, psychology, and a social or behavioral science. Many also require anatomy and physiology, phonetics, and a course in speech and hearing science. These prerequisites are usually completed before starting the master's program and must come from accredited colleges.
Most states require at least 400 hours of supervised clinical practicum before licensure, including a clinical fellowship or externship completed through an accredited program. ASHA’s Certificate of Clinical Competence also requires 400 supervised hours, with at least 325 in direct client contact.
- Common Prerequisites for Speech Pathology Graduate... https://bouve.northeastern.edu/news/6-common-prerequisites-for-speech-pathology-graduate-programs/
- Prerequisite Program | Communication Sciences & Disorders https://www.tc.columbia.edu/biobehavioral-sciences/communication-sciences-and-disorders/prerequisite-program/
- How to become a speech-language pathologist https://www.pacific.edu/blog/2025/08/22/how-to-become-a-speech-language-pathologist/
- SLP Prerequisites: Complete Checklist for Non-CSD Majors https://www.speechpathologygraduateprograms.org/blog/slp-prerequisites/
- SLP Prereqs: r/slpGradSchool https://www.reddit.com/r/slpGradSchool/comments/vt0kc8/slp_prereqs/
