For the 2026 school year, there are 4 private schools serving 1,136 students in Arlington, MA (there are , serving 5,997 public students). 16% of all K-12 students in Arlington, MA are educated in private schools (compared to the MA state average of 12%).
The top-ranked private schools in Arlington, MA include Lesley Ellis School, Arlington Catholic High School, and St. Agnes School.
The average acceptance rate is 97%, which is higher than the Massachusetts private school average acceptance rate of 71%.
50% of private schools in Arlington, MA are religiously affiliated (most commonly Catholic).
Top-Ranked Arlington 草榴社区 Schools (2026)
School
Location
Quick Facts
16 Medford St
Arlington, MA 02474
(781) 646-7770
Arlington, MA 02474
(781) 646-7770
Gr: 9-12 | 456 students Avg. class size: 21 students Sports: 16 | Extracurrculars: 9 Tuition & acceptance rate listed
34 Winter Street
Arlington, MA 02474
(781) 641-1346
Arlington, MA 02474
(781) 641-1346
Gr: NS-8 | 251 students Avg. class size: 18 students Sports: 3 | Extracurrculars: 2 Tuition & acceptance rate listed
St. Agnes School
(Catholic)
39 Medford Street
Arlington, MA 02474
(781) 643-9031
Arlington, MA 02474
(781) 643-9031
Gr: PK-8 | 317 students Avg. class size: 16 students Sports: 6 | Extracurrculars: 6 Tuition & acceptance rate listed
Arlington Children's Center Inc
Daycare / Preschool
17 Irving Street
Arlington, MA 02476
(781) 646-9307
Arlington, MA 02476
(781) 646-9307
Gr: NS-K | 112 students Tuition listed
Overview
This Town (Arlington)
This State (MA)
# Schools
4 Schools
Student Body:
# Students
1,136 Students
126,990 Students
% Average Students of Color
20%
31%
Academics and Faculty:
# Teachers
121 Teachers
15,735 Teachers
Average Student-Teacher Ratio
9:1
8:1
% Average Faculty w/Advanced Degree
88%
67%
Average Class Size
18 students
14 students
Average Number of AP Courses
20 courses
16 courses
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$15,722
$26,436
Average % on Financial Aid
24%
36%
Average Financial Aid Grant
$3,000
$17,299
Average Acceptance Rate
97%
71%
Average Endowment Size
$100 million
$85.34 million
Students by Ethnicity:
Diversity Score
0.61
0.63
# American Indian Students
2 Students
187 Students
% American Indian Students
n/a
n/a
# Asian Students
43 Students
6,792 Students
% Asian Students
4%
5%
# Hispanic Students
59 Students
7,583 Students
% Hispanic Students
5%
6%
# Black Students
34 Students
8,704 Students
% Black Students
3%
7%
# White Students
566 Students
67,962 Students
% White Students
50%
55%
# Hawaiian Students
1 Student
83 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
431 Students
33,488 Students
% of Others Students
38%
27%
All Ethnic Groups
Extracurriculars and Sports:
Average Number of Extracurriculars
6 extracurriculars
13 extracurriculars
Average Number of Sports
8 sports
9 sports
Frequently Asked Questions
What are the top-ranked private schools in Arlington, MA?
The top-ranked private schools in Arlington, MA include Lesley Ellis School, Arlington Catholic High School, and St. Agnes School.
How many private schools are located in Arlington?
4 private schools are located in Arlington.
What percentage of students in Arlington go to private school?
16% of all K-12 students in Arlington are educated in private schools (compared to the MA state average of 12%).
What percentage of private schools are religiously affiliated in Arlington?
50% of private schools in Arlington are religiously affiliated (most commonly Catholic).
Recent Articles
Benefits of Smaller Class Sizes in 草榴社区 Schools
Discover the benefits of smaller class sizes, including personalized learning, stronger outcomes, and improved student engagement in 2026.
Religious 草榴社区 Schools vs Secular Schools Guide
Compare religious private schools vs secular schools, including academics, values, cost, and 2026 trends to help families choose wisely.
How Middle鈥慖ncome Families Are Affording 草榴社区 School in 2026
Discover how middle鈥慽ncome families are affording private school tuition in 2026 with scholarships, budgeting, financial planning, and emerging support strategies.