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Largest Connecticut Private Schools

Name: Connecticut Average Students Per School Trends (All Private Schools)
Creator: Private School Review
License: https://www.privateschoolreview.com/terms

The average private school in Connecticut has 167 students (2026-27).

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

Quick Facts (26-27)

# CT Schools Ranked: 387
Top 20 Range (Students): 583–1,345
CT School Avg.: 167
National School Avg.: 175

Quick Facts (26-27)

# CT Schools Ranked: 387
Top 20 Range (Students): 583–1,345
CT School Avg.: 167
National School Avg.: 175

Connecticut Average Students Per School (Trends)

Showing 2016–2025. Full 11-year historical data available below ↓

Total Growth: (-4.1%) (-7 since 2016)

View Data

Year	National avg	Connecticut (CT) avg	YoY Change (#)	YoY Change (%)
2025	179	165	▲ +4	▲ +2.5%
2024	172	161	▼ -2	▼ -1.2%
2023	174	163	▼ -5	▼ -3.0%
2022	185	168	▲ +2	▲ +1.2%
2021	180	166	▲ +3	▲ +1.8%
2020	171	163	▼ -4	▼ -2.4%
2019	175	167	▲ +2	▲ +1.2%
2018	172	165	▼ -10	▼ -5.7%
2017	180	175	▲ +3	▲ +1.7%
2016	178	172	▲ +5	▲ +3.0%
2015	167	167	—	—

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Source: National Center for Education Statistics (NCES) Private School Universe Survey (PSS), direct school submissions, and proprietary website research and analysis by Private School Review.

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Show school map — Connecticut (students range: 583–1,345, avg 167)

School Size Range: 412 1,345 Avg. School Size: 663

Frequently Asked Questions

What is the Connecticut average private schools student size?

The Connecticut average private schools student size is 167 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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