Every nursing program in the country requires applicants to complete a defined set of prerequisite courses before they can apply or enroll. These nursing prerequisites are not suggestions. They are hard requirements, and missing even one course or falling short of a minimum grade can delay your application by a full cycle. If you are a pre-nursing student planning your path toward a BSN, accelerated BSN, or direct-entry program, this article breaks down the specific coursework you need, the grade thresholds that matter, and the strategic decisions that can set you apart.
The landscape of nursing prerequisite courses has become more detailed and more competitive over the past several years. Programs are increasingly specific about which versions of a course they accept, whether community college credit qualifies, and how recently the coursework was completed. Understanding these nuances early allows you to plan a course sequence that meets requirements cleanly, without wasted semesters or redundant retakes. What follows is a thorough, course-by-course look at the prerequisites most programs expect, along with practical guidance on how to approach each one.
The Core Science Courses That Anchor Every Nursing Application
The backbone of any nursing prerequisite list is a cluster of science courses designed to prepare you for clinical reasoning, pharmacology, pathophysiology, and the kind of critical thinking the NCLEX now tests through its Clinical Judgment Measurement Model. These are the courses admissions committees scrutinize most carefully, and they carry the most weight in what programs often call your “science GPA” or “prerequisite GPA.”
Anatomy and Physiology I and II
Anatomy and physiology for nursing is almost always a two-semester sequence, and most programs require both halves with a lab component. A&P I typically covers musculoskeletal, integumentary, and nervous systems, while A&P II covers cardiovascular, respiratory, renal, endocrine, and reproductive systems. These courses form the foundation for nearly every clinical course you will take in nursing school, from health assessment to adult medical-surgical nursing.
Programs are specific about this sequence. A combined, single-semester “Anatomy and Physiology” course may not satisfy requirements at schools that expect the two-semester version. Before enrolling, confirm with each target program whether a combined course is accepted. Many universities publish prerequisite equivalency guides, and admissions offices will evaluate transcripts on a case-by-case basis if you ask.
The grade bar here is firm. While most programs publish a minimum grade of C, the competitive reality is that students admitted to selective BSN programs often hold A’s or strong B’s in A&P. A grade of C minus frequently does not meet the stated minimum, even at programs that list “C or better” as the threshold. If your A&P grades are below a B, retaking the course is worth serious consideration, especially if you are applying to competitive programs.
Microbiology
Microbiology with a lab is required by the vast majority of BSN and accelerated BSN programs. This course covers bacteria, viruses, fungi, parasites, immune response, and infection control principles. In clinical practice, microbiology underpins everything from sterile technique to understanding antibiotic resistance and communicable disease management.
Some programs require that microbiology be taken after or concurrently with A&P I. Others have no sequencing requirement. Check each program’s catalog, because taking microbiology out of sequence can result in the credit not being accepted. The concepts you build in microbiology are directly tested in nursing school courses on infection prevention, public health, and community nursing, so strong performance here pays dividends later.
Students who have completed structured clinical observation experiences often describe how much more tangible microbiology concepts become after watching infection control protocols in real healthcare settings. In IMA’s nursing placements in Kenya and Tanzania, for example, students observe how sterile technique and pathogen management are applied in high-volume triage environments, reinforcing classroom concepts in a way that reading alone cannot replicate. If you are interested in how nursing careers can develop into highly specialized and well-compensated roles, IMA’s breakdown of highest-paid nursing specialties is worth reviewing as you plan ahead.
Chemistry
Chemistry requirements vary more than any other prerequisite across nursing programs. Some schools require a full year of general chemistry with lab (Chemistry I and II). Others accept a single semester of general chemistry, sometimes called “Chemistry for Health Sciences” or “Introductory Chemistry.” A smaller number of programs, particularly accelerated second-degree BSN tracks, may require organic chemistry or biochemistry.
The safest approach is to complete at least one semester of general chemistry with a lab at a regionally accredited institution. If you are applying to multiple programs, check whether any of your target schools require the two-semester sequence or an organic chemistry component. Completing a stronger chemistry track than the minimum opens more doors and avoids the problem of discovering too late that a program you want requires a course you skipped.
Statistics
A college-level statistics course is required by most nursing programs and is increasingly emphasized in admissions. This course prepares you for evidence-based practice, research literacy, and quality improvement, all of which are central to modern nursing education and practice. Some programs accept “Introduction to Statistics,” while others require a course specifically titled “Biostatistics” or “Statistics for Health Sciences.”
If your school offers a biostatistics section, that version tends to align more closely with nursing school content and may be viewed favorably by admissions committees. Regardless of the specific title, the course should cover descriptive statistics, probability, hypothesis testing, confidence intervals, and regression basics.
Behavioral Science and General Education Prerequisites
Science courses get the most attention, but nursing programs also require a set of behavioral science and general education courses that are easy to overlook or undervalue. These courses round out your preparation and, in many programs, are weighted into the prerequisite GPA calculation.
Psychology and Human Development
Nearly every BSN program requires introductory psychology, and many also require a course in human development, lifespan psychology, or developmental psychology. These courses inform your understanding of patient behavior, mental health nursing, pediatric care, and geriatric nursing. Some programs accept “Introduction to Psychology” alone; others require both introductory psychology and a separate developmental or lifespan course. Read each program’s prerequisite list carefully.
Nutrition
A college-level nutrition course is required by many BSN programs, though not all. Where required, this course typically covers macronutrients, micronutrients, metabolism, dietary assessment, and nutrition across the lifespan. If your program list includes schools that require nutrition, take the course early. It is generally not difficult, and it frees up later semesters for more demanding science courses.
English Composition and Communication
Most programs require English Composition I, and many require English Composition II or a speech/communication course. These requirements are straightforward and are often completed during freshman year, but confirm they are on your transcript before applying. Missing a general education prerequisite is a surprisingly common reason for application delays.
How Nursing Programs Evaluate Your Prerequisite GPA
Understanding how your prerequisite GPA is calculated is just as important as earning the grades. Nursing programs typically calculate two separate GPAs during the admissions review: your cumulative undergraduate GPA and your nursing prerequisite GPA, which includes only the specific courses on the program’s prerequisite list.
The prerequisite GPA often carries more weight. A student with a 3.4 cumulative GPA and a 3.8 prerequisite GPA is generally in a stronger position than a student with a 3.7 cumulative but a 3.2 in the sciences. This is because the prerequisite GPA is seen as a more direct predictor of your ability to handle nursing school coursework.
If you have retaken a prerequisite, policies on how retakes factor into GPA vary by program. Some programs average the original and retake grades; others use the most recent grade. NursingCAS, the centralized application service used by many programs, has its own GPA calculation methodology. Before retaking a course, understand how each target program and NursingCAS will treat the retake in their calculations.
One area that often causes confusion is how AP, CLEP, and pass/fail (S/U) credits are handled. For the current admissions cycle, many programs and NursingCAS calculate these as equivalent to a 3.0 (B) for GPA purposes when credit was awarded. That means earning a 5 on an AP Biology exam, while it may satisfy a prerequisite, could pull down your prerequisite GPA relative to a letter-graded A at a four-year institution. Consider whether retaking a course for a graded A would benefit your application math.
Programs that use NursingCAS for centralized application processing will verify your transcripts and recalculate GPAs according to their own formulas, so your self-calculated GPA may differ from the official one.
Course Recency, Community College Credit, and Transfer Policies
Three practical questions come up repeatedly for pre-nursing students: Does it matter how old my prerequisites are? Can I take them at a community college? Will my credits transfer?
How Recent Do Prerequisites Need to Be?
Nursing prerequisites do not technically expire. A college transcript is a permanent record. However, many programs strongly prefer or explicitly require that science courses be completed within the last five to seven years. Some competitive programs have moved toward a five-year recency window, meaning anatomy and physiology, microbiology, and chemistry courses completed more than five years before the application date may not be accepted or may require a retake.
If your science courses are more than ten years old, the practical recommendation is to retake them. Admissions committees want to see that your foundational science knowledge is current, particularly given how quickly clinical guidelines and pharmacological information evolve. A post-baccalaureate retake at a regionally accredited institution demonstrates academic momentum and recency.
Community College Versus University Courses
Most nursing programs accept prerequisite courses completed at community colleges, provided the institution is regionally accredited. Regional accreditation is the key distinction. Credits from nationally accredited schools or non-accredited programs may not transfer and may not be accepted by NursingCAS.
There is a persistent myth that admissions committees penalize community college coursework. In practice, most BSN programs evaluate the grade and accreditation status, not the institution’s prestige. That said, a small number of highly selective programs may note the academic context. If you are applying to a program known for extreme selectivity, contact their admissions office directly and ask whether community college prerequisites are treated the same as university courses.
Transferring Credits Between Schools
If you attend multiple institutions before applying to nursing school, confirm that your prerequisite courses will transfer to your intended program. Articulation agreements between community colleges and universities within the same state system usually streamline this process. For out-of-state transfers or unusual course titles, request a prerequisite equivalency evaluation early. Do not wait until the application deadline to find out that your “Human Anatomy” course does not map to the program’s required “Anatomy and Physiology I.”
The American Association of Colleges of Nursing (AACN) provides a BSN program search tool that can help you identify programs and compare their stated requirements, which is a useful starting point as you build your list.
Building a Strong Prerequisite Record Beyond the Minimum
Meeting the minimum requirements gets your application reviewed. Standing out requires something more. Here are practical ways to strengthen your prerequisite record and overall application.
First, aim for A’s in the sciences. This is not empty advice. The difference between a 3.5 and a 3.9 prerequisite GPA is meaningful at competitive programs, and the science courses are where that gap is created. Use tutoring, study groups, office hours, and supplemental instruction resources. Treat every prerequisite as a chance to build the GPA that admissions committees will scrutinize most closely.
Second, sequence your courses strategically. Take A&P I before microbiology. Take chemistry before or concurrently with A&P if your program recommends it. Front-loading the harder sciences when your schedule allows focused study time produces better grades and better understanding.
Third, seek out clinical exposure that connects to your coursework. Observational experiences, volunteer roles in healthcare settings, and structured programs that place you in supervised clinical environments all help you see how prerequisite content applies in practice. Students who can articulate those connections in personal statements and interviews are more compelling applicants. If you are considering whether an organized international placement or an independent experience is the better fit for your goals, IMA’s comparison of going with an organization versus going solo for overseas placements addresses that question directly.
Fourth, keep your application materials current. If you are waitlisted, update your transcript with any in-progress prerequisite grades as soon as they post. Demonstrating continued academic momentum can make a difference when programs are making final decisions. The same principle of strategic follow-up applies across health professions admissions; students interested in related fields may find parallels in how pre-physician assistant programs structure their competitive advantages.
What to Do If Your Prerequisites Are Incomplete or Below Standard
If you are reading this and realizing that your prerequisite record has gaps, weak grades, or outdated courses, you have clear options.
Post-baccalaureate pre-nursing programs exist specifically for students who need to complete or strengthen prerequisites. These programs, offered at many universities and some community colleges, allow you to retake or complete required courses in a structured, accelerated format. They are especially useful for career changers who hold a bachelor’s degree in a non-science field.
If one or two grades are below competitive range, targeted retakes can improve your prerequisite GPA significantly. Focus on the courses with the lowest grades first, since replacing a C with an A has a larger mathematical impact than improving a B to an A.
If your science courses are very old, a systematic retake plan across two to three semesters can refresh your transcript and demonstrate to admissions committees that your science foundation is current and solid.
Throughout this process, maintain contact with the admissions offices of your target programs. Ask specific questions: “Will you accept a retake from a community college?” “Do you average original and retake grades?” “Is there a recency requirement for microbiology?” These conversations prevent costly assumptions.
The Bureau of Labor Statistics projects strong growth for registered nursing positions over the coming decade, which means programs are expanding, but so is the applicant pool. A strong, clean prerequisite record is still your most reliable competitive tool.
Frequently Asked Questions
Can I take nursing prerequisites at a community college?
Yes. Most BSN and accelerated BSN programs accept prerequisite courses completed at regionally accredited community colleges. Regional accreditation is the critical factor; credits from institutions without regional accreditation may not transfer or be accepted by NursingCAS. If you have concerns about a specific program’s policy, contact their admissions office directly to confirm.
Do nursing prerequisite courses expire?
Prerequisite courses do not formally expire, since college transcripts are permanent records. However, many nursing programs prefer or require that science courses (anatomy and physiology, microbiology, chemistry) be completed within the last five to seven years. If your science prerequisites are more than ten years old, retaking them is generally recommended to remain competitive in the current admissions cycle.
What is the minimum grade required for nursing prerequisites?
Most programs require a grade of C or better in each prerequisite course, but a C minus often does not meet this threshold. Competitive programs frequently admit students with B’s and A’s in their prerequisite courses, so aiming above the minimum is a practical strategy. Check each program’s specific grade requirements, as some set higher minimums for science courses.
