Easton Country Day School Top 12 · Highest % Faculty w/ Adv. Degrees (CT)

King School Top 11 · Most AP Courses (CT)

Renbrook School Top 13 · Largest Endowment (CT)

Home > Connecticut > Average Student Size

Largest Connecticut Private Schools

The average private school in Connecticut has 166 students (2026-27).

The largest private school in Connecticut is The Greenwich Country Day School, with 1,345 students.

Quick Facts (2026-27)

# CT Schools Ranked: 388
Top 20 Range (Students): 580–1,345
CT School Avg.: 166
National School Avg.: 175

Quick Facts (2026-27)

# CT Schools Ranked: 388
Top 20 Range (Students): 580–1,345
CT School Avg.: 166
National School Avg.: 175

Connecticut Average Students Per School (Trends)

View Data

Year	Connecticut (CT) avg
2025	165
2024	161
2023	163
2022	168
2021	166
2020	163
2019	167
2018	165
2017	175
2016	172
2015	167

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Show school map — Connecticut (students range: 580–1,345, avg 166)

School Size Range: 412 1,345 Avg. School Size: 662

Frequently Asked Questions

What is the Connecticut average private schools student size?

The Connecticut average private schools student size is 166 for 2026-27.

What are the private schools with the largest student size in Connecticut?

The top ranked private schools in Connecticut include The Greenwich Country Day School, Horace Mann School John Dorr Nature Laboratory and Greenwich Country Day School.

What is private high school and private elementary school with the largest student size in Connecticut?

The private high school with the largest student size in Connecticut is The Greenwich Country Day School, with a value of 1345. The private elementary school with the largest student size is The Greenwich Country Day School, with a value of 1345.

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