# School City, state Students per class year Class year Source
1 Milton Academy Milton, MA 10.7
32 over 3 class years
2024-2026 School's published list
2 Noble and Greenough School Dedham, MA 8.0
40 over 5 class years
2021–2025 School's published list
3 Harvard-Westlake School Studio City, CA 8.0
8 over 1 class year
BY THE CLASSES OF 2021-2025 School's published list
4 St. Paul's School (NH) Concord, NH 6.5
13 over 2 class years
College Matriculation for the Forms of 2025 and 2026 (combined two-year TOTAL column) School's published list
5 Dalton School New York, NY 6.2
37 over 6 class years
2019-2024 School's published list
6 The Brearley School New York, NY 5.8
29 over 5 class years
2022–2026 School's published list
7 The Lawrenceville School Lawrenceville, NJ 5.2
26 over 5 class years
the last five years School's published list
8 Rye Country Day School Rye, NY 5.0
5 over 1 class year
Class of 2026 School's published list
9 The Roxbury Latin School West Roxbury, MA 4.8
29 over 6 class years
2021-2026 School's published list
10 Spence School New York, NY 4.8
24 over 5 class years
Classes of 2021 - 2025 School's published list
11 The Hotchkiss School Lakeville, CT 4.5
18 over 4 class years
Classes of 2023, 2024, 2025, and 2026 School's published list
12 Belmont Hill School Belmont, MA 4.2
21 over 5 class years
2022-2026 School's published list
13 Choate Rosemary Hall Wallingford, CT 4.2
21 over 5 class years
IN THE PAST FIVE YEARS, (CLASS OF 2022-2026) School's published list
14 Winsor School Boston, MA 4.2
17 over 4 class years
2022–2025 School's published list
15 Brunswick School Greenwich, CT 4.0
4 over 1 class year
Class of 2026 Matriculation; Composite Matriculation List of 2022-2026 School's published list
16 Phillips Academy (Andover) Andover, MA 4.0
4 over 1 class year
Class of 2024 School's published list
17 Groton School Groton, MA 3.6
18 over 5 class years
2022–2026 School's published list
18 University of Chicago Lab School Chicago, IL 3.5
14 over 4 class years
In the past four years School's published list
19 Riverdale Country School Bronx, NY 3.2
19 over 6 class years
Higher Ed Enrollment 2021-2026 School's published list
20 Punahou School Honolulu, HI 3.2
13 over 4 class years
over the last four years: 2026, 2025, 2024, and 2023 School's published list
21 Horace Mann School Bronx, NY 3.0
9 over 3 class years
Class of 2024 - 2026 Graduates School's published list
22 Hopkins School New Haven, CT 3.0
3 over 1 class year
Class of 2026 School's published list
23 Santa Margarita Catholic High School Rancho Santa Margarita, CA 3.0
3 over 1 class year
Class of 2025 School's published list
24 St Ann'S School Brooklyn, NY 3.0
3 over 1 class year
CLASS OF 2024 School's published list
25 The Columbus Academy Gahanna, OH 3.0
3 over 1 class year
Class of 2026 School's published list
26 College Preparatory School Oakland, CA 2.6
13 over 5 class years
the last five years School's published list
27 Collegiate School New York, NY 2.4
12 over 5 class years
2022-2026 School's published list
28 St. Sebastian's School Needham, MA 2.4
12 over 5 class years
past five years School's published list
29 Boston University Academy Boston, MA 2.3
14 over 6 class years
CLASSES 2016-2021 School's published list
30 Menlo School Atherton, CA 2.3
7 over 3 class years
Classes of 2023-2025 School's published list
31 The Chapin School New York, NY 2.2
11 over 5 class years
2022-2026 School's published list
32 The Taft School Watertown, CT 2.2
11 over 5 class years
past five years (2020-2024) School's published list
33 Pine Crest School Fort Lauderdale, FL 2.0
10 over 5 class years
2022-26 School's published list
34 Francis W. Parker School Chicago, IL 2.0
8 over 4 class years
Classes of 2022-2025 School's published list
35 Newark Academy Livingston, NJ 2.0
8 over 4 class years
2023-2026 School's published list
36 Northfield Mount Hermon Mount Hermon, MA 2.0
8 over 4 class years
the past four years School's published list
37 The Potomac School Mclean, VA 2.0
8 over 4 class years
past four years School's published list
38 The Hockaday School Dallas, TX 2.0
6 over 3 class years
2024 – 2026 School's published list
39 Blair Academy Blairstown, NJ 2.0
2 over 1 class year
Class of 2026 School's published list
40 Dwight-Englewood School Englewood, NJ 2.0
2 over 1 class year
Class of 2026 School's published list
41 Middlesex School Concord, MA 2.0
2 over 1 class year
Class of 2026 School's published list
42 Peddie School Hightstown, NJ 2.0
2 over 1 class year
Class of 2026 School's published list
43 Lakeside School Seattle, WA 1.8
9 over 5 class years
2021-2025 School's published list
44 The Pingry School Basking Ridge, NJ 1.8
7 over 4 class years
2022-2025 School's published list
45 Branson School Ross, CA 1.7
5 over 3 class years
Branson Classes of 2024-2026 School's published list
46 St. Mark's School of Texas Dallas, TX 1.7
5 over 3 class years
Classes of 2023-2025 School's published list
47 The Harker School San Jose, CA 1.7
5 over 3 class years
Classes of 2023, 2024 & 2025 School's published list
48 Concord Academy Concord, MA 1.6
8 over 5 class years
2021 to 2025 School's published list
49 Gilman School Baltimore, MD 1.6
8 over 5 class years
classes of 2020-2024 School's published list
50 Greenwich Academy Greenwich, CT 1.6
8 over 5 class years
2022-2026 School's published list

The 50 largest of 148 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: Pierrepont School (4), St Andrew'S School (4).

All schools, public and private, and the lists of colleges that admitted each school's graduates, are on the Harvard University feeder leaderboard. More about the college: Harvard University.

Each count is copied from a list the school published about its own graduates: where they enrolled, one student at one college. The ranked figure is that count divided by the class years the school's list covers. A school that is not on this page did not publish a numbered matriculation list we could read — that is all absence means here. It is never a statement about a school's graduates. Lists of acceptances (where students were admitted, not where they enrolled) are never counted in this ranking: an acceptances list runs about three times an enrollment list, so counting the two together would compare different things. Those lists are ranked on their own, separately.