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 Arlington Catholic High School, St. Agnes School, and Lesley Ellis 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
126,979 Students
% Average Students of Color
20%
31%
Academics and Faculty:
# Teachers
121 Teachers
15,736 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
$26,435
Average % on Financial Aid
24%
36%
Average Financial Aid Grant
$3,000
$17,299
Average Acceptance Rate
97%
71%
Average Endowment Size
$100 million
$85.49 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
7,581 Students
% Hispanic Students
5%
6%
# Black Students
34 Students
8,702 Students
% Black Students
3%
7%
# White Students
566 Students
67,960 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
33,470 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 Arlington Catholic High School, St. Agnes School, and Lesley Ellis 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
The Social Fit Interview: Questions to Ask Students, Not Admissions
Discover how talking with current students can reveal a private school's true culture and help families assess social fit before enrolling.
AI Companions and Student Well-Being: What Parents Should Ask
Learn how AI companions may affect student well-being and discover the key questions parents should ask before embracing this emerging technology.
Is a Phone-Free 草榴社区 School Right for Your Child?
Explore the benefits, challenges, and key considerations of choosing a phone-free private school for your child in 2026.