# School City, state Students per class year Class year Source
1 Bullis School Potomac, MD 3.0
3 over 1 class year
Class of 2026 School's published list
2 The Masters School Dobbs Ferry, NY 3.0
3 over 1 class year
Class of 2024 School's published list
3 Palmer Trinity School Palmetto Bay, FL 2.0
8 over 4 class years
Classes of 2023–2026 School's published list
4 Depaul College Prep Chicago, IL 2.0
2 over 1 class year
Class of 2025 School's published list
5 Peddie School Hightstown, NJ 2.0
2 over 1 class year
Class of 2026 School's published list
6 Regis High School New York, NY 2.0
2 over 1 class year
2022-2025 School's published list
7 Suffield Academy Suffield, CT 2.0
2 over 1 class year
Class of 2025 School's published list
8 The Bolles School Jacksonville, FL 2.0
2 over 1 class year
Class of 2026 School's published list
9 Ellis School Pittsburgh, PA 1.6
8 over 5 class years
2019–2023 School's published list
10 Punahou School Honolulu, HI 1.5
6 over 4 class years
over the last four years: 2026, 2025, 2024, and 2023 School's published list
11 Thayer Academy Braintree, MA 1.5
6 over 4 class years
2020-23 School's published list
12 Crossroads School Santa Monica, CA 1.3
4 over 3 class years
classes of 2023-25 School's published list
13 Milton Academy Milton, MA 1.3
4 over 3 class years
2024-2026 School's published list
14 Portsmouth Abbey School Portsmouth, RI 1.3
4 over 3 class years
2024–2026 School's published list
15 Berwick Academy South Berwick, ME 1.2
6 over 5 class years
past five graduating classes (2022 – 2026) School's published list
16 Friends Central School Wynnewood, PA 1.2
6 over 5 class years
2019-2023 School's published list
17 Westtown School West Chester, PA 1.2
6 over 5 class years
2022-2026 School's published list
18 William Penn Charter School Philadelphia, PA 1.2
6 over 5 class years
2022-2026 School's published list
19 Northfield Mount Hermon Mount Hermon, MA 1.2
5 over 4 class years
the past four years School's published list
20 Key School Annapolis, MD 1.0
6 over 6 class years
2021 - 2026 School's published list
21 Friends Select School Philadelphia, PA 1.0
5 over 5 class years
Classes of 2020-2024 School's published list
22 Laurel School Shaker Heights, OH 1.0
5 over 5 class years
2021-2025 School's published list
23 University School of Nashville Nashville, TN 1.0
4 over 4 class years
2022-2025 School's published list
24 Marin Academy San Rafael, CA 1.0
3 over 3 class years
CLASSES OF 2023–2025 School's published list
25 The Harker School San Jose, CA 1.0
3 over 3 class years
Classes of 2023, 2024 & 2025 School's published list
26 Berkshire School Sheffield, MA 1.0
1 over 1 class year
Class of 2021 School's published list
27 Bishop Feehan Attleboro, MA 1.0
1 over 1 class year
Class of 2026 School's published list
28 Friends School of Baltimore Baltimore, MD 1.0
1 over 1 class year
Class of 2026 School's published list
29 Millbrook School Millbrook, NY 1.0
1 over 1 class year
Class of 2026 School's published list
30 Phillips Academy (Andover) Andover, MA 1.0
1 over 1 class year
Class of 2024 School's published list
31 Rowland Hall Salt Lake City, UT 1.0
1 over 1 class year
Class of 2026 School's published list
32 Saint Augustine High School San Diego, CA 1.0
1 over 1 class year
Class of 2026 School's published list
33 Saint Joseph-Notre Dame High School Alameda, CA 1.0
1 over 1 class year
Class of 2026 School's published list
34 Tabor Academy Marion, MA 1.0
1 over 1 class year
Class of 2025 Matriculation School's published list
35 The Columbus Academy Gahanna, OH 1.0
1 over 1 class year
Class of 2026 School's published list
36 The Hun School of Princeton Princeton, NJ 1.0
1 over 1 class year
CLASS OF 2026 MATRICULATION School's published list
37 The International School of San Francisco San Francisco, CA 1.0
1 over 1 class year
Class of 2026 School's published list
38 The Madeira School Mclean, VA 1.0
1 over 1 class year
Class of 2026 School's published list
39 Tower Hill School Wilmington, DE 1.0
1 over 1 class year
Class of 2026 School's published list
40 Western Reserve Academy Hudson, OH 1.0
1 over 1 class year
Class of 2026 School's published list
41 Cate School Carpinteria, CA 0.8
4 over 5 class years
2022-2026 School's published list
42 Loyola High School Los Angeles, CA 0.8
4 over 5 class years
2020-24 School's published list
43 Norfolk Academy Norfolk, VA 0.8
4 over 5 class years
2021 - 2025 School's published list
44 Pingree School South Hamilton, MA 0.8
4 over 5 class years
2021–2025 School's published list
45 Bentley School Lafayette, CA 0.8
3 over 4 class years
College Matriculations 2022–2025 School's published list
46 Emma Willard School Troy, NY 0.8
3 over 4 class years
Classes of 2023, 2024, 2025, 2026 School's published list
47 Francis Parker School San Diego, CA 0.8
3 over 4 class years
2022-2025 School's published list
48 Holton-Arms School Bethesda, MD 0.8
3 over 4 class years
College Matriculations 2017-2020 School's published list
49 University of Chicago Lab School Chicago, IL 0.8
3 over 4 class years
In the past four years School's published list
50 Germantown Friends School Philadelphia, PA 0.7
2 over 3 class years
2023-25 School's published list

The 50 largest of 125 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: Garrison Forest School (1), The Lovett School (1).

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