Cats Academy Photo

Best Braintree Private High Schools (2026)

For the 2026 school year, there are 4 private high schools serving 1,706 students in Braintree, MA.
The top-ranked private high schools in Braintree, MA include Archbishop Williams High School, Thayer Academy, and Cats Academy.
The average acceptance rate is 68%, which is higher than the Massachusetts private high school average acceptance rate of 62%.
25% of private high schools in Braintree, MA are religiously affiliated (most commonly Catholic).

Top-Ranked Braintree Private High Schools (2026)

School
Location
Quick Facts
Archbishop Williams High School
Archbishop Williams High School Photo
(Catholic)
(1)
40 Independence Ave
Braintree, MA 02184
(781) 535-6051
Gr: 7-12 | 648 students Avg. class size: 20 students Sports: 17 | Extracurrculars: 1 Tuition & acceptance rate listed
Cats Academy
Cats Academy Photo
Special Program Emphasis
2001 Washington Street
Braintree, MA 02184
(857) 400-9700
Gr: 8-12 | 327 students Avg. class size: 12 students Tuition listed
Thayer Academy
745 Washington Street
Braintree, MA 02184
(781) 664-2201
Gr: 5-12 | 686 students Avg. class size: 15 students Tuition & acceptance rate listed
Granite Academy
Special Education School
6 Columbian St
Braintree, MA 02184
(781) 380-3945
Gr: 6-12 | 45 students Avg. class size: 9 students Sports: 1 Tuition & acceptance rate listed

Overview

This Town (Braintree)
This State (MA)
# Schools
4 Schools

Student Body:

# Students
1,706 Students
56,975 Students
% Average Students of Color
31%
28%

Academics and Faculty:

# Teachers
223 Teachers
8,489 Teachers
Average Student-Teacher Ratio
8:1
6:1
% Average Faculty w/Advanced Degree
66%
71%
Average Class Size
14 students
12 students
Average Number of AP Courses
16 courses
16 courses
Average SAT score
1139
(Out of 1600)
1287
Average ACT score
25
(Out of 36)
29

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$36,642
$40,833
Average % on Financial Aid
37%
40%
Average Financial Aid Grant
$24,000
$28,887
Average Acceptance Rate
68%
62%

Students by Ethnicity:

0.57
0.52
# American Indian Students
n/a
127 Students
% American Indian Students
n/a
n/a
# Asian Students
280 Students
4,063 Students
% Asian Students
16%
7%
# Hispanic Students
113 Students
3,645 Students
% Hispanic Students
7%
6%
# Black Students
114 Students
3,816 Students
% Black Students
7%
7%
# White Students
1,073 Students
39,391 Students
% White Students
62%
67%
# Hawaiian Students
n/a
35 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
137 Students
7,367 Students
% of Others Students
8%
13%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
1 extracurriculars
20 extracurriculars
Average Number of Sports
9 sports
12 sports

Frequently Asked Questions

What are the top-ranked private high schools in Braintree, MA?
The top-ranked private high schools in Braintree, MA include Archbishop Williams High School, Thayer Academy, and Cats Academy.
How many private high schools are located in Braintree?
4 private high schools are located in Braintree.
What percentage of private high schools are religiously affiliated in Braintree?
25% of private high schools in Braintree are religiously affiliated (most commonly Catholic).

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