Boston University: Inside the Numbers

Few schools have changed their position in the American admissions market as visibly as Boston University. A quarter century ago, BU admitted roughly half of its applicants and competed mainly within New England. Today it sits among the most selective private research universities in the country, with an applicant pool that crossed 80,000 in the middle of the period covered here and a current admit rate in the low teens. The trajectory is real, but the most recent five years tell a more complicated story than the headline rate alone implies. This report draws on Boston University’s Common Data Sets from 2021–22 through 2025–26 to examine what has changed, what has held steady, and what the patterns mean for families and counselors thinking about BU as a destination.

Application volume and admit rate

Source: BU Common Data Sets, Section C1, 2021–22 through 2025–26.

The five-year arc is best read in two phases. Applications climbed from roughly 76,000 to a peak of about 80,800 between Fall 2021 and Fall 2022, then settled back toward 77,000 by Fall 2025. Admits, meanwhile, dropped sharply in the middle of the window and stayed there. The Class of 2025 was admitted at 18.6 percent in Fall 2021. By the next year, BU cut admits from 14,129 to 11,607 even as applications grew, and the rate fell to 14.4 percent. The biggest move came the following year, when admits dropped again to 8,733 against a still-large pool, pushing the rate to 10.8 percent for the Class of 2027, the lowest figure on record. The rate then held near 11 percent for the Class of 2028 before ticking up to 12.8 percent for the Class of 2029.

What sits behind the modest reversal in the most recent year? Two things, both documented by BU itself. The Class of 2027 and Class of 2028 came in over enrollment targets, which forced the admissions office to admit far fewer students than usual to avoid stretching housing and class capacity. By Fall 2025, BU had room to expand the admit count again. At the same time, applications softened slightly. The combination produced a small upward adjustment in the admit rate, not a relaxation in standards. BU’s selectivity has more than tripled since the late 2000s, from an admit rate above 50 percent for the Class of 2012 to 12.8 percent for the Class of 2029, and the recent uptick should be read as a class-management adjustment within a still-very-selective range.

Yield and the waitlist

Yield, the share of admitted students who enroll, is the cleaner indicator of where BU sits in students’ choice sets. It climbed from 28.4 percent in Fall 2021 to 37.4 percent by Fall 2024, an unusually steep nine-point rise in three cycles, before easing to 35.0 percent in Fall 2025. Yield growth of that size usually signals one of two things: that the school has become a more committed first-choice for the applicants it accepts, or that it has restructured admissions to capture more of its class through binding pathways. At BU, both are operating. Early Decision has grown steadily as a share of the class, which mechanically lifts yield, and the regular admit pool has tightened around students with stronger demonstrated interest.

Waitlist behavior reinforces the same story with a wrinkle. Across the first four years of the window, BU placed roughly 15,000 students on its waitlist annually (an outlier in 2022–23 aside), had about 9,000 accept the spot, and admitted between 1 and 34 from the list, essentially treating the waitlist as a courtesy mechanism rather than an enrollment tool. Then in Fall 2025, BU pulled 95 students from the waitlist, several times its prior pace. The shift is consistent with what other selective universities reported for the 2025 cycle, when softer yield and FAFSA disruption pushed schools to lean harder on the waitlist to complete the class.

Early Decision dominance

Source: BU Common Data Sets, Section C21, 2021–22 through 2025–26.

BU operates two binding Early Decision rounds (November 1 and early January deadlines) and no Early Action option. ED applications grew 22 percent over the window, from 5,659 to 6,907. The ED admit rate compressed from 32 percent in Fall 2021 to a low of 25 percent in Fall 2022 before drifting back up to 31 percent in Fall 2025. ED admits filled roughly 59 percent of the Class of 2029, according to BU’s own class profile, meaning the binding rounds now account for about three of every five seats.

The strategic implication is clear. An applicant whose Regular Decision odds would sit around 8 to 9 percent faces ED odds in the high 20s to low 30s. For a student whose first choice is BU and whose family can commit without comparing aid packages, ED is the more efficient pathway by a wide margin. The complication for the cost-conscious applicant: BU does not release ED candidates from the commitment because aid offers fall short of expectations, so families with real financial uncertainty are wise to wait for Regular Decision and accept the harder odds. The new BU Promise (discussed below) makes ED less risky for income brackets that now have predictable aid floors.

Test policy and academic profile

Source: BU Common Data Sets, Sections C9–C11. The SAT 25th–75th for 2021–22 is the reported middle range; subsequent years use the exact 25th and 75th percentiles.

BU adopted a test-optional policy for Fall 2021 admissions and has extended it several times. The current commitment runs through Fall 2028 and Spring 2029, making BU one of the more durable test-optional adopters among private research universities. The share of enrolled students submitting an SAT score has risen from 23 percent at the policy’s low point in Fall 2022 to 36 percent in Fall 2025, while ACT submission has flattened around 10 percent. Combined submission now sits at roughly 46 percent, high enough that test submission has become an effective signal even when it is not required.

Score medians have drifted upward. The SAT 25th percentile rose from 1370 to 1420 across the post-2022 reporting years, and the 75th percentile rose from 1480 to 1510. Among enrolled students who submitted, half scored 1470 or higher in each of the last two years. The high school academic profile sharpened in parallel: the share of enrolled students with a 4.0 GPA climbed from 26 percent to a peak of 41 percent in Fall 2024, settling at 36 percent in Fall 2025, with the rest of the class clustered in the 3.5 to 3.99 range. The class-rank pattern, where it is reported, shows 86 to 92 percent of the class drawn from the top decile of their high schools.

A contextual note. BU is one of relatively few selective private universities to have kept a test-optional policy after Yale, Dartmouth, Brown, Cornell, Penn, MIT, and others moved back to required testing across 2024 and 2025. That stance is now a point of difference. Whether BU eventually follows the test-required trend is an open question; for now, applicants who test below the middle 50 percent can legitimately choose not to submit, and applicants who test at or above the 75th percentile have a real advantage in submitting.

What BU is weighing

BU’s C7 factor disclosures have held steady through the window, with one consequential exception. Rigor of secondary school record and academic GPA are listed as very important. Standardized test scores, application essay, and recommendations sit at important. Class rank moves between important and considered. On the nonacademic side, extracurricular activities and character/personal qualities are very important; first-generation status, volunteer work, talent/ability (very important for College of Fine Arts applicants, otherwise considered), and work experience are listed as considered or important. Geographical residence, religious affiliation, alumni relation, and level of applicant’s interest are listed as considered or not considered in various years.

The substantive change is the disappearance of racial/ethnic status from the C7 list. It was rated considered through the 2022–23 reporting year and was removed entirely starting with the 2023–24 CDS, following the Supreme Court’s June 2023 decision in Students for Fair Admissions v. Harvard. This is not a BU-specific change; every selective school adjusted its C7 the same way. It matters here as a data point for how the next section reads.

The demographic shift after SFFA

Source: BU Common Data Sets, Section B2. Percentages are computed against total first-year enrollment; two-or-more-races and other categories are not shown, so columns do not sum to 100.

The most striking number in the five-year file is the Black enrollment trajectory. Black first-year enrollment grew from 4.9 percent in Fall 2021 to 9.0 percent in Fall 2023, then fell sharply to 3.1 percent in Fall 2024, the first cycle in which admissions officers reviewed applications without knowledge of applicant race, before recovering modestly to 3.7 percent in Fall 2025. The decline was acknowledged publicly by BU President Melissa Gilliam in September 2024 as “concerning and disappointing,” and the university stood up a task force to examine recruitment pipelines, outreach, financial aid, and the broader applicant experience. Notably, BU reported that the number of Black students who applied was nearly identical to the prior year; the gap opened in the admissions decisions themselves.

The Hispanic share moved less dramatically, from 8.3 percent in Fall 2021 to 12.8 percent in Fall 2023, settling at 12.1 percent in Fall 2025. The Asian share grew steadily through the window, from 20.3 percent to 24.2 percent. International enrollment trended slightly downward, from 23 percent to 20.7 percent of first-year students, consistent with broader patterns across U.S. private universities during a period of visa friction and shifting global demand. The share of students declining to report race grew from 3.5 percent to 4.6 percent, modest enough that it does not materially complicate the year-over-year read.

Tuition, aid, and the BU Promise

Source: BU Common Data Sets, Section G1, 2021–22 through 2025–26.

Tuition rose from $58,560 to $69,870 across the five-year window, a 19.3 percent increase, or roughly 4.5 percent a year. Combined billed cost (tuition, fees, and standard housing and meals) is now $91,342 before books and personal expenses, and BU’s own 2025–26 estimate for total cost of attendance for resident students lands above $94,000. That places BU among the higher-sticker private universities in the country.

The aid story runs in the opposite direction. In September 2024, BU announced the BU Promise, taking effect with the 2026–27 academic year. The Promise commits BU to meeting 100 percent of demonstrated need without loans for all domestic first-year students who have not previously attended college, and it sets a maximum expected parent contribution of $20,000 for families with household income under $200,000 (with typical assets). Families with household income under $75,000 receive aid covering full tuition plus standard housing and the standard meal plan. This is a real upgrade. BU’s prior aid practice met roughly 95 to 98 percent of need on average for first-year students, with loans embedded in many packages. Removing loans and setting a $20,000 ceiling on parent contribution for households up to $200,000 brings BU closer to the policies that MIT and a handful of other private peers have adopted, though the parent-contribution cap is a distinguishing feature rather than a full free-tuition pledge.

Source: BU Common Data Sets, Section H2, full-time first-year columns.

Several patterns in H2 stand out independently of the BU Promise. The average need-based grant for full-time first-years grew from $54,294 to $66,926 over the window, a 23 percent increase, exceeding the tuition increase rate. The number of first-years whose full demonstrated need was met more than doubled from a low of 392 in Fall 2023 to 805 in Fall 2024, then settled at 710 in Fall 2025. The percentage of need met among aid recipients climbed from 95 to 98 percent. Even before the Promise takes effect, BU was tightening its aid floor for need-eligible students.

Student borrowing, meanwhile, has fallen. Among graduating seniors, the share borrowing through any loan program dropped from 40 percent (Class of 2021) to 34 percent (Class of 2025). Average cumulative debt for borrowers fell from $40,944 to $36,774. The Promise’s elimination of loans from the need-based package will accelerate that trend. One caveat: BU’s institutional methodology for assessing need is its own, and families that look generous on the FAFSA may receive a less favorable read under the CSS Profile that BU requires. Running the net price calculator before applying ED is non-negotiable.

Retention and graduation

First-year retention has held in a tight 94 to 95 percent band across the window, ending at 94 percent for the Fall 2024 cohort. The six-year graduation rate, reported for cohorts that entered four to six years before the CDS year, has held similarly steady: 89 percent for the Fall 2015 through Fall 2018 cohorts and 90 percent for the most recently reported Fall 2019 cohort. Pell-grant recipients in that cohort graduated at 92 percent, slightly higher than the rate for students with no need-based aid. That figure deserves attention. A Pell graduation rate that matches or exceeds the overall rate is uncommon and reflects a financial aid program doing what it is designed to do.

The student-to-faculty ratio has moved from 11:1 to 10:1 over the window. Class-size data continue to show that the majority of undergraduate sections enroll under 20 students, with a substantial set of larger sections in introductory STEM and economics courses. For a research university of BU’s size (roughly 18,300 undergraduates), the class-size distribution is reasonable but not boutique, and applicants who prefer small-classroom environments throughout the curriculum should compare carefully against smaller liberal arts options.

Closing observations

BU’s selectivity story has shifted in character over these five years. The drop in admit rate from 18.6 percent to 12.8 percent looks dramatic on the surface, but more than half of the compression occurred in a single cycle (Fall 2023) as the university cut admits aggressively after two over-enrolled classes. Applications grew modestly across the window and have since softened. The deeper change is yield: BU has moved from the high 20s to the mid 30s, anchored by Early Decision now filling roughly 59 percent of the class. The school has become both harder to get into and harder to turn down.

For applicants who view BU as a clear first choice, Early Decision is the structurally favored path, by a margin large enough to matter even when families are inclined to wait. The new BU Promise reduces the financial uncertainty that has historically made binding ED a difficult call for middle-income families. With a $20,000 maximum parent contribution for incomes up to $200,000 starting in 2026–27, ED becomes a more rational option for a substantially larger share of applicants.

Demonstrated interest is officially listed at considered or not considered across the years and has drifted between the two. BU is not a school where a campus visit alone makes the difference, but student-side contacts (information requests through the admissions website, attendance at a virtual session, a meeting with a BU representative at a high school visit) are noted in the applicant file and represent a low-cost way to signal seriousness. The substance of the supplemental essay still does more work than any of these touchpoints.

The demographic question is the unresolved item. BU’s Black first-year enrollment fell from 9 percent to 3 percent in the first cycle after SFFA and has not yet recovered to prior levels. The university has acknowledged the gap, stood up a task force, and announced expanded outreach and financial aid commitments. Whether the BU Promise and related recruitment work close that gap will be visible in the Fall 2026 and Fall 2027 CDS files. Applicants from underrepresented backgrounds should expect that BU is investing in recruitment pipelines and that the institutional intent to enroll a diverse class is real; what the law permits in evaluating individual applications has not changed.

Test-optional remains in place through Fall 2028. For applicants whose scores fall below the middle 50 (currently 1420–1510 SAT), declining to submit is a legitimate and well-trodden path. For applicants at or above the 75th percentile, submitting helps and should be treated as all but mandatory in practice. The reported testing share among enrollees (46 percent combined SAT/ACT) tells you what the rest of the admitted pool is doing.