# School City, state Students per class year Class year Source
1 Millbrook School Millbrook, NY 4.0
4 over 1 class year
Class of 2026 School's published list
2 Delbarton School Morristown, NJ 3.0
3 over 1 class year
Class of 2026 School's published list
3 Choate Rosemary Hall Wallingford, CT 2.0
10 over 5 class years
IN THE PAST FIVE YEARS, (CLASS OF 2022-2026) School's published list
4 Avenues the World School New York, NY 2.0
2 over 1 class year
CLASSES OF 2023–2026 School's published list
5 Berkshire School Sheffield, MA 2.0
2 over 1 class year
Class of 2021 School's published list
6 Little Red School House and Elisabeth Irwin High School New York, NY 2.0
2 over 1 class year
CLASS OF 2022 School's published list
7 Pomfret School Pomfret, CT 2.0
2 over 1 class year
Class of 2022 School's published list
8 St Ann'S School Brooklyn, NY 2.0
2 over 1 class year
CLASS OF 2024 School's published list
9 St. Luke's School (New Canaan) New Canaan, CT 2.0
2 over 1 class year
Class of 2026 / Classes 2021-2025 School's published list
10 The Columbus Academy Gahanna, OH 2.0
2 over 1 class year
Class of 2026 School's published list
11 Noble and Greenough School Dedham, MA 1.8
9 over 5 class years
2021–2025 School's published list
12 The Lawrenceville School Lawrenceville, NJ 1.8
9 over 5 class years
the last five years School's published list
13 The Taft School Watertown, CT 1.8
9 over 5 class years
past five years (2020-2024) School's published list
14 Riverdale Country School Bronx, NY 1.7
10 over 6 class years
Higher Ed Enrollment 2021-2026 School's published list
15 Germantown Friends School Philadelphia, PA 1.7
5 over 3 class years
2023-25 School's published list
16 Northfield Mount Hermon Mount Hermon, MA 1.5
6 over 4 class years
the past four years School's published list
17 Groton School Groton, MA 1.4
7 over 5 class years
2022–2026 School's published list
18 Packer Collegiate Institute Brooklyn, NY 1.4
7 over 5 class years
2021 - 2025 School's published list
19 Albany Academies Albany, NY 1.2
6 over 5 class years
2022-2026 School's published list
20 Germantown Academy Fort Washington, PA 1.0
5 over 5 class years
Classes of 2022-2026 School's published list
21 Wilbraham & Monson Academy Wilbraham, MA 1.0
5 over 5 class years
2022-2026 School's published list
22 The Potomac School Mclean, VA 1.0
4 over 4 class years
past four years School's published list
23 Kent School Kent, CT 1.0
3 over 3 class years
College Matriculations 2023-2025 School's published list
24 Portsmouth Abbey School Portsmouth, RI 1.0
3 over 3 class years
2024–2026 School's published list
25 Blair Academy Blairstown, NJ 1.0
1 over 1 class year
Class of 2026 School's published list
26 Brooks School North Andover, MA 1.0
1 over 1 class year
Class of 2024 School's published list
27 Manlius Pebble Hill School Syracuse, NY 1.0
1 over 1 class year
Class of 2025 School's published list
28 Nichols School Buffalo, NY 1.0
1 over 1 class year
Class of 2026 School's published list
29 Pace Academy Atlanta, GA 1.0
1 over 1 class year
Class of 2026 School's published list
30 Peddie School Hightstown, NJ 1.0
1 over 1 class year
Class of 2026 School's published list
31 Providence Day School Charlotte, NC 1.0
1 over 1 class year
Class of 2026 School's published list
32 Suffield Academy Suffield, CT 1.0
1 over 1 class year
Class of 2025 School's published list
33 The Bryn Mawr School Baltimore, MD 1.0
1 over 1 class year
Class of 2026 School's published list
34 The Greenwich Country Day School Greenwich, CT 1.0
1 over 1 class year
2021-2025 School's published list
35 Dalton School New York, NY 0.8
5 over 6 class years
2019-2024 School's published list
36 Greenwich Academy Greenwich, CT 0.8
4 over 5 class years
2022-2026 School's published list
37 Spence School New York, NY 0.8
4 over 5 class years
Classes of 2021 - 2025 School's published list
38 The Brearley School New York, NY 0.8
4 over 5 class years
2022–2026 School's published list
39 University Prep Seattle, WA 0.8
4 over 5 class years
2022–2026 School's published list
40 Holton-Arms School Bethesda, MD 0.8
3 over 4 class years
College Matriculations 2017-2020 School's published list
41 Kent Place School Summit, NJ 0.8
3 over 4 class years
2022-2025 School's published list
42 North Shore Country Day School Winnetka, IL 0.8
3 over 4 class years
2023-2026 School's published list
43 Winsor School Boston, MA 0.8
3 over 4 class years
2022–2025 School's published list
44 Marin Academy San Rafael, CA 0.7
2 over 3 class years
CLASSES OF 2023–2025 School's published list
45 Ethical Culture Fieldston School New York, NY 0.6
3 over 5 class years
Classes of 2022–2026 School's published list
46 Friends Seminary New York, NY 0.6
3 over 5 class years
The Classes of 2022–2026 School's published list
47 Greens Farms Academy Westport, CT 0.6
3 over 5 class years
Class of 2022-2026 School's published list
48 Marymount School of New York New York, NY 0.6
3 over 5 class years
2020-2024 School's published list
49 Pingree School South Hamilton, MA 0.6
3 over 5 class years
2021–2025 School's published list
50 The Agnes Irwin School Bryn Mawr, PA 0.6
3 over 5 class years
Classes of 2022-2026 School's published list

The 50 largest of 105 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: St Andrew'S School (6).

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

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.