For the 2026 school year, there are 6 private high schools serving 609 students in Gaithersburg, MD.
The top-ranked private high schools in Gaithersburg, MD include Forbush School At Oakmont Upper School and Covenant Life School.
The average acceptance rate is 75%, which is lower than the Maryland private high school average acceptance rate of 77%.
33% of private high schools in Gaithersburg, MD are religiously affiliated (most commonly Christian).
Top-Ranked Gaithersburg Private High Schools (2026)
School
Location
Quick Facts
7503 Muncaster Mill Rd
Gaithersburg, MD 20877
(301) 869-4500
Gaithersburg, MD 20877
(301) 869-4500
Gr: PK-12 | 493 students Avg. class size: 20 students Sports: 7 | Extracurrculars: 11 Tuition & acceptance rate listed
Forbush School At Oakmont Upper School
Special Education School
610 E Diamond Ave Ste E
Gaithersburg, MD 20877
(301) 330-4359
Gaithersburg, MD 20877
(301) 330-4359
Gr: 9-12 | 32 students
The Foundation School Of Montgomery County
Special Education School
220 Girard St
Gaithersburg, MD 20877
(301) 740-7807
Gaithersburg, MD 20877
(301) 740-7807
Gr: 1-12 | 62 students Avg. class size: 10 students
Lambo Academy International
Alternative School (Christian)
119 Watkins Station Cir # B
Gaithersburg, MD 20879
(415) 754-3889
Gaithersburg, MD 20879
(415) 754-3889
Gr: 9-12 | 6 students
Marcia D Smith School
Alternative School
9075 Comprint Ct
Gaithersburg, MD 20877
(301) 926-2300
Gaithersburg, MD 20877
(301) 926-2300
Gr: 9-12 | 16 students
Gaithersburg, Maryland Private Schools (Closed)
School
Location
Quick Facts
19425 Woodfield Road
Gaithersburg, MD 20879
(240) 238-1500
Gaithersburg, MD 20879
(240) 238-1500
Gr: PK-8 | 196 students Avg. class size: 24 students Tuition & acceptance rate listed
Gaithersburg Presbyterian Preschool & Kdgn (Closed 2025)
Daycare / Preschool (Christian)
610 S Frederick Avenue
Gaithersburg, MD 20877
(301) 977-5787
Gaithersburg, MD 20877
(301) 977-5787
Gr: PK-K | 46 students Avg. class size: 14 students Tuition & acceptance rate listed
Overview
This Town (Gaithersburg)
This State (MD)
# Schools
6 Schools
Student Body:
# Students
609 Students
73,515 Students
% Average Students of Color
30%
36%
Academics and Faculty:
# Teachers
82 Teachers
8,573 Teachers
Average Student-Teacher Ratio
7:1
9:1
% Average Faculty w/Advanced Degree
50%
60%
Average Class Size
15 students
15 students
Average Number of AP Courses
5 courses
13 courses
Average SAT score
1220
(Out of 1600)
1231
Average ACT score
26
(Out of 36)
27
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$15,350
$20,350
Average % on Financial Aid
35%
36%
Average Financial Aid Grant
$5,000
$9,481
Average Acceptance Rate
75%
77%
Students by Ethnicity:
Diversity Score
0.68
0.60
# American Indian Students
1 Student
246 Students
% American Indian Students
n/a
n/a
# Asian Students
19 Students
2,593 Students
% Asian Students
3%
4%
# Hispanic Students
28 Students
3,308 Students
% Hispanic Students
4%
5%
# Black Students
97 Students
12,752 Students
% Black Students
16%
17%
# White Students
198 Students
43,528 Students
% White Students
32%
59%
# Hawaiian Students
n/a
300 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
276 Students
11,381 Students
% of Others Students
45%
15%
All Ethnic Groups
Extracurriculars and Sports:
Average Number of Extracurriculars
11 extracurriculars
15 extracurriculars
Average Number of Sports
7 sports
10 sports
Frequently Asked Questions
What are the top-ranked private high schools in Gaithersburg, MD?
The top-ranked private high schools in Gaithersburg, MD include Forbush School At Oakmont Upper School and Covenant Life School.
How many private high schools are located in Gaithersburg?
6 private high schools are located in Gaithersburg.
How diverse are private high schools in Gaithersburg?
Gaithersburg private high schools are approximately 30% minority students, which is lower than the Maryland private school average of 36%.
What percentage of private high schools are religiously affiliated in Gaithersburg?
33% of private high schools in Gaithersburg are religiously affiliated (most commonly Christian).
Recent Articles
Private School Fees Increase Mid-Year: A Parent Action Plan
A 2026 parent action plan for managing mid-year private school tuition increases, including contracts, negotiation tips, and financial options.
Private School Scholarship Scams & Red Flags to Watch Out For (2026 Guide)
Learn how to spot private school scholarship scams in 2026, including red flags, real examples, and expert tips to protect families.
Diversity in Private Schools: Progress and Obstacles in 2026
Explore how private schools are advancing diversity in 2026, key gains made, ongoing challenges, and what families should know.
