62 Worcester Business Journal | Book of Lists 2026 | wbjournal.com
F O C U S E D U C AT I O N & N O N P R O F I T S
Largest private high schools
Ranked by total enrollment, 2025-2026
School
Total
enrollment
Grades/
student body
Day tuition/
(1)
boarding tuition (1) Tuition notes
Head of school/
year founded
1
St. John's High School
378 Main St., Shrewsbury 01545
508-842-8934 • stjohnshigh.org
910
7-12
Boys
$21,660
N/A
Day school only
Benjamin P. Horgan
1898
2
Whitinsville Christian School
279 Linwood Ave., Whitinsville 01588
508-234-8211 • whitinsvillechristian.org
562
Pre-K-12
Co-ed
$19,050
N/A
Day school only
Sarah Bowler
1928
3
Worcester Academy
81 Providence St., Worcester 01604
508-754-5302 • worcesteracademy.org
530
6-12, postgraduate
Co-ed
$47,725
$66,225
$78,000 for international boarding students
Kevin Breen
1834
4
Bancroft School
110 Shore Drive, Worcester 01605
508-854-9227 • bancroftschool.org
465
Pre-K-12
Co-ed
$39,950
N/A
Day school only
Stephanie Luebbers
1900
5
Lawrence Academy
26 Powderhouse Road, Groton 01450
978-448-6535 • lacademy.edu
400
9-12
Co-ed
$65,500
$80,900
Dan Scheibe
1793
6
Cushing Academy
39 School St., Ashburnham 01430
978-827-7000 • cushing.org
385
9-12, postgraduate
Co-ed
$54,075
$79,980
Randy R. Bertin
1865
7
St. Paul Diocesan Jr/Sr High School
144 Granite St., Worcester 01604
508-852-5555 • saintpaulknights.org
375
(2)
7-12
Co-ed
$12,243
N/A
Day school only; $20,000 for international
students
Fr. José Carvajal
2020
8
St. Mark's School
25 Marlboro Road, Southborough 01772
508-786-6000 • stmarksschool.org
372
9-12
Co-ed
$66,700
$82,300
Ivory D. Hills
1865
9
The Winchendon School
172 Ash St., Winchendon 01475
978-297-1223 • winchendon.org
260
9-12, postgraduate
Co-ed
$38,250
$79,750
$66,650 for five-day boarding students
Sean Duncan
1926
10
South Lancaster Academy
198 George Hill Road, Lancaster 01523
978-368-8544 • mysla.org
254
Pre-K-12
Co-ed
$14,440
N/A
Day school only
Ollyce Gardner
1882
11
Notre Dame Academy
425 Salisbury St., Worcester 01609
508-757-6200 • nda-worc.org
249
7-12
Girls
$19,250
N/A
Day school only
Linda D. Anderson
(3)
1951
12
St. Bernard's High School
45 Harvard St., Fitchburg 01420
978-342-3212 • stbernardshighschool.org
223
9-12
Co-ed
$11,125
N/A
Day school only
Rob Carlin
1920
13
Immaculate Heart of Mary
282 Still River Road, Harvard 01451
978-456-8877 • immaculateheartschool.org
142
1-12
Co-ed
$4,000
N/A
Day school only
Bro. Thomas Augustine
1976
Source: Each school via survey as of Q1 2026, school websites and Boarding School Review. Notes: Millis' Sparhawk Academy is constructing a new 18,000-square-foot high school, with an expected
opening for the 2026-27 school year. N/A=not applicable.
(1) Tuition for upcoming 2026-2027 academic year, and for high-school or upper school
(2) For 2024-2025 academic year
(3) Succeeded Marilyn Tenzca in April 2026
-Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com
