# School City, state Students per class year Class year Source
1 Phillips Academy (Andover) Andover, MA 8.0
8 over 1 class year
Class of 2024 School's published list
2 Harvard-Westlake School Studio City, CA 6.0
6 over 1 class year
BY THE CLASSES OF 2021-2025 School's published list
3 University of Chicago Lab School Chicago, IL 5.2
21 over 4 class years
In the past four years School's published list
4 Ethical Culture Fieldston School New York, NY 5.0
25 over 5 class years
Classes of 2022–2026 School's published list
5 Horace Mann School Bronx, NY 5.0
15 over 3 class years
Class of 2024 - 2026 Graduates School's published list
6 Lake Forest Academy Lake Forest, IL 4.5
18 over 4 class years
2021 - 2024 School's published list
7 The Hockaday School Dallas, TX 4.3
13 over 3 class years
2024 – 2026 School's published list
8 The Lawrenceville School Lawrenceville, NJ 4.0
20 over 5 class years
the last five years School's published list
9 Maret School Washington, DC 3.8
19 over 5 class years
classes of 2022–2026 School's published list
10 Francis W. Parker School Chicago, IL 3.8
15 over 4 class years
Classes of 2022-2025 School's published list
11 Dalton School New York, NY 3.7
22 over 6 class years
2019-2024 School's published list
12 Choate Rosemary Hall Wallingford, CT 3.6
18 over 5 class years
IN THE PAST FIVE YEARS, (CLASS OF 2022-2026) School's published list
13 Menlo School Atherton, CA 3.3
10 over 3 class years
Classes of 2023-2025 School's published list
14 Milton Academy Milton, MA 3.3
10 over 3 class years
2024-2026 School's published list
15 Riverdale Country School Bronx, NY 3.0
18 over 6 class years
Higher Ed Enrollment 2021-2026 School's published list
16 Lakeside School Seattle, WA 3.0
15 over 5 class years
2021-2025 School's published list
17 Avenues the World School New York, NY 3.0
3 over 1 class year
CLASSES OF 2023–2026 School's published list
18 Blair Academy Blairstown, NJ 3.0
3 over 1 class year
Class of 2026 School's published list
19 Brentwood School Los Angeles, CA 3.0
3 over 1 class year
Class of 2024 School's published list
20 Depaul College Prep Chicago, IL 3.0
3 over 1 class year
Class of 2025 School's published list
21 Dwight-Englewood School Englewood, NJ 3.0
3 over 1 class year
Class of 2026 School's published list
22 Rye Country Day School Rye, NY 3.0
3 over 1 class year
Class of 2026 School's published list
23 The Pembroke Hill School - Wornall Campus Kansas City, MO 3.0
3 over 1 class year
Class of 2026 School's published list
24 Pine Crest School Fort Lauderdale, FL 2.8
14 over 5 class years
2022-26 School's published list
25 Lick Wilmerding High School San Francisco, CA 2.8
11 over 4 class years
past four years School's published list
26 Newark Academy Livingston, NJ 2.8
11 over 4 class years
2023-2026 School's published list
27 The Blake School Hopkins, MN 2.6
13 over 5 class years
Classes 2021-2025 School's published list
28 The Pingry School Basking Ridge, NJ 2.5
10 over 4 class years
2022-2025 School's published list
29 Ransom Everglades School Miami, FL 2.4
12 over 5 class years
Classes of 2020-24 School's published list
30 The Harker School San Jose, CA 2.3
7 over 3 class years
Classes of 2023, 2024 & 2025 School's published list
31 Packer Collegiate Institute Brooklyn, NY 2.2
11 over 5 class years
2021 - 2025 School's published list
32 Noble and Greenough School Dedham, MA 2.0
10 over 5 class years
2021–2025 School's published list
33 St. John's School Houston, TX 2.0
10 over 5 class years
Over the past five (2022-2026) graduating classes School's published list
34 The Chapin School New York, NY 2.0
10 over 5 class years
2022-2026 School's published list
35 The Potomac School Mclean, VA 2.0
8 over 4 class years
past four years School's published list
36 Crossroads School Santa Monica, CA 2.0
6 over 3 class years
classes of 2023-25 School's published list
37 Germantown Friends School Philadelphia, PA 2.0
6 over 3 class years
2023-25 School's published list
38 Sage Hill School Newport Coast, CA 2.0
6 over 3 class years
2023-2025 School's published list
39 Chadwick School Palos Verdes Estate, CA 2.0
2 over 1 class year
Class of 2025 School's published list
40 St Ignatius College Prep Chicago, IL 2.0
2 over 1 class year
CLASS OF 2026 School's published list
41 Concord Academy Concord, MA 1.8
9 over 5 class years
2021 to 2025 School's published list
42 The Head-Royce School Oakland, CA 1.8
9 over 5 class years
(2021–25) School's published list
43 Nightingale-Bamford School New York, NY 1.8
7 over 4 class years
2022–2025 School's published list
44 North Shore Country Day School Winnetka, IL 1.8
7 over 4 class years
2023-2026 School's published list
45 The Hotchkiss School Lakeville, CT 1.8
7 over 4 class years
Classes of 2023, 2024, 2025, and 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 College Preparatory School Oakland, CA 1.6
8 over 5 class years
the last five years School's published list
48 Friends Seminary New York, NY 1.6
8 over 5 class years
The Classes of 2022–2026 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 Spence School New York, NY 1.6
8 over 5 class years
Classes of 2021 - 2025 School's published list

The 50 largest of 173 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: Pierrepont School (2), The Lovett School (1).

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