Biology has always been the gateway science. It is the major that leads to medical school, to graduate research, to careers in biotechnology and public health, and increasingly to the interdisciplinary fields, computational biology, genomics, and bioengineering, that are reshaping medicine and life science. It is also one of the most popular undergraduate majors in the country: American colleges and universities award more than 130,000 biology bachelor’s degrees a year, the largest of the STEM fields at the undergraduate level.
Yet the range of biology programs is vast. At one end are large research universities with dozens of specialized courses, active laboratory environments, and faculty publishing in leading journals. At the other are smaller colleges where the biology department may have eight or ten professors but where undergraduates conduct original research as first-years, co-author papers, and gain individualized mentorship that large institutions cannot replicate. Both models produce outstanding biologists. The question is which produces the right environment for a particular student.
To help students, families, and counselors think more systematically about that choice, College Transitions has built a new data-driven ranking of the top 100 undergraduate biology programs in the country. We evaluated 786 four-year institutions that awarded at least 30 biology bachelor’s degrees between 2022 and 2024, scoring each across five dimensions of program quality. Here is what we found.
How We Built the Ranking
The approach evaluates institutions on five components, each converted to a percentile score across the full universe of 786 qualifying programs.
| Component | Weight | Data Source |
| Major Emphasis | 12% | IPEDS Degree Completions |
| Program Scale | 13% | IPEDS Degree Completions (log) |
| Academic Rating | 30% | IPEDS / Common Data Set |
| Earnings & ROI | 25% | College Scorecard / Georgetown CEW |
| PhD Productivity | 20% | NSF Survey of Earned Doctorates |
The largest single factor is the Academic Rating (30 percent), a composite of nine indicators, among them SAT/ACT scores, student-to-faculty ratio, class size, faculty qualifications, retention and graduation rates, and a graduation performance residual that captures whether a school graduates students at a higher or lower rate than its incoming profile would predict. For a science-intensive major like biology, the overall academic environment, the caliber of instruction, the rigor of the curriculum, and the quality of the peer community, shapes the undergraduate experience as much as anything else.
Earnings and ROI (25 percent) blends biology-specific median earnings four years after graduation (55 percent of the component) with institution-wide earnings and long-term return-on-investment data from Georgetown’s Center on Education and the Workforce. The tilt toward field-specific data is deliberate: institution-wide medians can be pulled up by graduates of high-earning programs like engineering or computer science, and what matters to a prospective biology student is what biology graduates actually earn.
PhD Productivity (20 percent) is one of the strongest quality signals available for undergraduate biology. Using NSF Survey of Earned Doctorates data across eleven biology and biomedical subfields over 2015 to 2024, we measure both the raw number of doctoral recipients who completed their undergraduate degree at each institution and the per-capita rate, meaning PhDs produced per 1,000 undergraduates. This 50/50 blend rewards both large research universities that send hundreds of graduates to doctoral programs and smaller colleges that produce doctorates far out of proportion to their size. Schools absent from the NSF data receive zero on this component.
Major Emphasis (12 percent) and Program Scale (13 percent) round out the model. Major Emphasis measures what share of an institution’s total degrees go to biology; Program Scale uses log-transformed degree counts to reward larger programs, with more faculty, more course sections, and more research infrastructure, without letting sheer enrollment dominate.
The Top 25
The full top 25 is shown below. One finding stands out right away: biology, unlike many fields, rewards both depth and scale. The programs at the top combine institutional prestige with real biological-science infrastructure, and the public research universities of California appear here in a way that sets biology apart from fields like economics or political science.
| Rank | Institution | State | Type | Score |
| 1 | Duke University | NC | Private | 93.4 |
| 2 | University of Pennsylvania | PA | Private | 92.0 |
| 3 | Cornell University | NY | Private | 91.8 |
| 4 | Harvard University | MA | Private | 90.1 |
| 5 | Northwestern University | IL | Private | 89.9 |
| 6 | Brown University | RI | Private | 89.8 |
| 7 | University of California-San Diego | CA | Public | 88.6 |
| 8 | Boston University | MA | Private | 87.1 |
| 9 | University of Notre Dame | IN | Private | 86.7 |
| 10 | Boston College | MA | Private | 86.7 |
| 11 | University of California-Los Angeles | CA | Public | 86.4 |
| 12 | University of Chicago | IL | Private | 86.4 |
| 13 | University of California-Davis | CA | Public | 85.8 |
| 14 | Lafayette College | PA | Liberal Arts | 85.8 |
| 15 | Tufts University | MA | Private | 85.3 |
| 16 | Vanderbilt University | TN | Private | 84.8 |
| 17 | Johns Hopkins University | MD | Private | 84.7 |
| 18 | University of California-Berkeley | CA | Public | 84.3 |
| 19 | University of Rochester | NY | Private | 84.2 |
| 20 | Colgate University | NY | Liberal Arts | 84.0 |
| 21 | University of Florida | FL | Public | 83.8 |
| 22 | Bucknell University | PA | Liberal Arts | 83.8 |
| 23 | Northeastern University | MA | Private | 83.7 |
| 24 | University of Wisconsin-Madison | WI | Public | 83.7 |
| 25 | Gettysburg College | PA | Liberal Arts | 83.5 |
Table 1. Top 25 Undergraduate Biology Programs, 2026 College Transitions Ranking.
Duke University (#1) earns the top spot by performing across every dimension: a 94.3 Academic Rating, the highest among all 786 programs, alongside a 97.4 Earnings and ROI score and a 97.2 PhD Productivity score. Duke’s program benefits from the university’s enormous investment in biomedical and life-science research, a world-class medical center next to undergraduates, and a culture that folds research into the undergraduate experience from the first year.
University of Pennsylvania (#2) and Cornell University (#3) complete the top three. Penn scores 99.5 on Earnings and ROI, the strongest mark in the top tier. Cornell leads the full dataset on Program Scale, a reflection of its enormous biology infrastructure, and posts one of the strongest Earnings and ROI results in the universe, consistent with the paths its graduates take into healthcare, biotechnology, and research in the New York metro area.
Harvard (#4) ranks fourth despite a near-perfect PhD Productivity score of 98.8 and 449 biology doctoral recipients over the past decade, the highest per-capita rate of any institution in our data at 63.2 PhDs per 1,000 undergraduates. Its fourth-place finish reflects a more modest Earnings and ROI score than the top three, a consequence of the large share of Harvard biology graduates who pursue further training, in medical school or PhD programs, before entering the workforce, which holds down short-term earnings.
What Separates the Best Programs?
The University of California: A System Like No Other
Perhaps the most distinctive feature of the biology ranking, and one that sets it apart from our economics and political science rankings, is the strength of the University of California system. Six UC campuses appear in the top 100, four of them in the top 25: UC San Diego (#7), UCLA (#11), UC Davis (#13), and UC Berkeley (#18). A fifth, UC Santa Barbara, ranks 28th, and UC Santa Cruz ranks 39th.
This is not a coincidence. The UC system has invested in biological research infrastructure as heavily as any university system in the world. UC San Diego (#7) is a notable case: it scores a perfect 100 on Program Scale, the largest biology program in our dataset in log-adjusted terms, and 97.2 on Major Emphasis, a reflection of how central biology is to a campus built around biomedical and ocean science. UC Davis (#13) scores 99.9 on Program Scale, producing 792 biology PhDs over the decade from one of the most comprehensive undergraduate life-science programs available.
For budget-conscious families in California, or out-of-state students willing to pay UC nonresident tuition, these campuses offer an unusual opportunity: access to some of the largest, best-funded, and most research-active biology programs in the country, where undergraduates can reach laboratory research as early as their second semester.
Johns Hopkins: The Outlier That Makes Perfect Sense
Johns Hopkins University (#17) merits attention. It scores 98.9 on Major Emphasis, the highest of any school in the top 25, a reflection of how concentrated biology degrees are at an institution organized around the life sciences and medicine. Its 98.6 PhD Productivity score rests on 392 biology doctoral recipients over the decade. It lands 17th rather than higher mainly because its Academic Rating, while strong, sits below the top tier, and its Earnings and ROI score is held down by the large share of Hopkins biology graduates who go directly to medical school or doctoral programs rather than into the workforce.
Hopkins is, in many ways, the biology equivalent of what MIT is to physics or Chicago is to economics: an undergraduate program in the field that is deeply serious and distinctive, but whose overall ranking is moderated by methodology factors that do not capture the full depth of the departmental experience.
The Liberal Arts College Footprint
Four liberal arts colleges appear in the top 25: Lafayette (#14), Colgate (#20), Bucknell (#22), and Gettysburg (#25). Their presence reflects the same structural advantage liberal arts colleges enjoy in our economics and psychology rankings: strong Major Emphasis scores, since biology commands an outsized share of their degrees, and high per-capita PhD production relative to their size.
Deeper in the rankings, the pattern strengthens. Wellesley (#30), Grinnell (#34), Williams (#38), Pomona (#44), and Amherst (#45) all rank in the top 50, driven by exceptional per-capita PhD rates. Grinnell’s and Pomona’s per-capita scores of 95.7 are not outliers; they reflect a consistent pattern at selective liberal arts colleges where biology faculty run active research programs with undergraduates, thesis requirements are the norm rather than the exception, and the path to graduate school is actively supported by departments of 10 to 15 professors who know their students by name.
The Top 50 at a Glance
The complete top 50, with composite scores and component breakdowns, is shown below.
Patterns, Themes, and What They Mean for Your Students
Biology is among the most consequential major choices a student can make, not because it is the most lucrative (it is not), but because the path from undergraduate biology to a career in medicine, research, biotechnology, or public health is long, competitive, and dependent on the quality and depth of undergraduate preparation. The patterns in this ranking carry practical implications for every student considering the major.
Biology rewards research access more than almost any other major. The gap between a program where undergraduates do genuine laboratory research, presenting at conferences, co-authoring papers, and running independent projects, and one where they only complete coursework is enormous, and it rarely shows up in traditional rankings. The PhD Productivity component is the best available proxy for that difference: programs that consistently send students to doctoral study have built self-reinforcing cultures of undergraduate research. For a student aiming at medicine, graduate school in biology, or a research career in biotech, this is the component to examine most closely.
The University of California system deserves a dedicated conversation with every biology-interested student. No other public system has invested as comprehensively in biological research infrastructure. Six UC campuses in the top 100 is not an accident; it reflects decades of state investment in research universities now operating at the frontier of life science. For a student who is academically competitive for UC admission, the biology programs at San Diego, Davis, Berkeley, and UCLA belong in the conversation alongside elite privates. The research opportunities, faculty, and peer communities at these campuses are comparable to the best anywhere.
Medical-school aspirations do not automatically point toward the highest-prestige institutions. One counterintuitive finding here is that the programs best suited for pre-med students are not always the most selective. Programs with strong Academic Ratings, active research cultures, and supportive advising, including many liberal arts colleges and mid-tier research universities, often produce more competitive medical-school applicants than larger, less attentive programs. Medical schools weigh GPA, MCAT scores, research experience, and the quality of recommendation letters. Smaller programs where faculty know students well, where research access is guaranteed rather than competed for, and where pre-health advising is strong can be the better preparation even when the institutional brand is less recognized.
Field-specific earnings for biology are lower than most students expect, and that calls for a frank conversation. Across our universe, median biology-specific earnings four years after graduation are well below those in fields like economics or computer science. Two realities drive this: many biology graduates are still in graduate or medical school at the four-year mark, which depresses short-term figures; and those who enter the workforce directly often start in laboratory-technician or research-assistant roles at modest salaries. Families should understand this plainly. The financial return on a biology degree is real but usually delayed, arriving later as physician salaries, pharmaceutical careers, or academic positions that require years of additional training. Counselors can help set accurate expectations and plan for that longer runway.
Size and focus are not the same thing, and both matter. This ranking rewards both large programs (through Program Scale) and focused ones (through Major Emphasis). A student who wants the broadest research infrastructure, the most faculty specializations, course options, and lab opportunities, should look at the UC system, Cornell, and Michigan. A student who wants to be known by their professors, to start research in the first year, and to work closely with faculty on original projects should look at the liberal arts colleges. Both paths lead to strong outcomes; the right choice depends on how the student learns best and what they are preparing for.
Rankings inevitably simplify. They cannot measure the quality of a mentor relationship, the energy of a lab group, the experience of presenting original research as a sophomore, or the long-term value of a peer community of serious scientists. But the patterns in this data are real, and they offer a more precise map than students and families usually have when making one of the most consequential educational decisions they face.
