John Carroll School Photo - Our 72-acre campus, located in Harford County

Top 10 Best Maryland Private High Schools Belonging to AIMSMDDC (Assoc. of independent Maryland and DC Schools) (2025)

For the 2025 school year, there are 17 private high schools belonging to AIMSMDDC (Assoc. of independent Maryland and DC Schools) serving 11,305 students in Maryland. You can also find more schools membership associations in Maryland.
The top ranked private high schools belonging to AIMSMDDC (Assoc. of independent Maryland and DC Schools) in Maryland include The Bryn Mawr School, Landon School, and Gilman School.
The average tuition cost is $32,311, which is higher than the Maryland private high school average tuition cost of $19,454.
35% of private high schools belonging to AIMSMDDC (Assoc. of independent Maryland and DC Schools) in Maryland are religiously affiliated (most commonly Catholic and Friends).

Top Ranked Private High Schools Belonging to AIMSMDDC (Assoc. of independent Maryland and DC Schools) in Maryland (2025)

School
Location
Grades
Students
Barrie School
Barrie School Photo
Montessori School
(4)
13500 Layhill Road
Silver Spring, MD 20906
(301) 576-2800
Grades: PK-12
| 421 students
Bullis School
Bullis School Photo - At Bullis, students thrive in their pursuit of self-discovery, broaden their horizons, and ultimately transform our world.
10601 Falls Rd
Potomac, MD 20854
(301) 299-8500
Grades: K-12
| 1,022 students
Glenelg Country School
Glenelg Country School Photo - Upon entering our beautiful 90-acre campus, you first see our Upper School building which also connects to our Athletic Center.
(3)
12793 Folly Quarter Road
Ellicott City, MD 21042
(410) 531-7347
Grades: NS-12
| 815 students
Landon School
Landon School Photo - We believe requiring a boy to engage in an array of experiences introduces him to passions and abilities he didn't know he had, which is essential to his emotional, social, physical, and intellectual growth.
All-boys
(6)
6101 Wilson Lane
Bethesda, MD 20817
(301) 320-3200
Grades: 3-12
| 690 students
The Bryn Mawr School
All-girls
(1)
109 W Melrose Ave
Baltimore, MD 21210
(410) 323-8800
Grades: PK-12
| 788 students
Charles E Smith Jewish Day School
Charles E Smith Jewish Day School Photo - CESJDS offers 12 different sports with 39 teams competing at middle school, junior varsity and varsity levels.
(Jewish)
(8)
1901 E Jefferson Street
Rockville, MD 20852
(301) 692-4803
Grades: PK-12
| 890 students
Connelly School Of The Holy Child
Connelly School Of The Holy Child Photo - McShain Library at Connelly School of the Holy Child
All-girls (Catholic)
(1)
9029 Bradley Blvd
Potomac, MD 20854
(301) 365-0955
Grades: 6-12
| 318 students
Garrison Forest School
Garrison Forest School Photo - The campus entrance on Garrison Forest Road
All-girls
(3)
300 Garrison Forest Road
Owings Mills, MD 21117
(410) 559-3111
Grades: NS-12
| 550 students
Gilman School
Gilman School Photo - Gilman's Upper School prepares young men to build the world of tomorrow. Students engage in a timeless and challenging college-preparatory program that emphasizes a strong work ethic, critical thinking skills, effective oral and written communication, and lifelong enjoyment of intellectual pursuits.
All-boys
5407 Roland Avenue
Baltimore, MD 21210
(410) 323-3800
Grades: PK-12
| 1,035 students
Indian Creek School
(3)
1130 Anne Chambers Way
Crownsville, MD 21032
(410) 923-3660
Grades: PK-12
| 560 students
Jemicy School
11 Celadon Rd
Owings Mills, MD 21117
(410) 653-2700
Grades: 1-12
| 453 students
John Carroll School
John Carroll School Photo - Our 72-acre campus, located in Harford County
(Catholic)
703 E Churchville Rd
Bel Air, MD 21014
(410) 838-8333
Grades: 9-12
| 715 students
Mount Saint Joseph High School
All-boys (Catholic)
(1)
4403 Frederick Ave
Baltimore, MD 21229
(410) 644-3300
Grades: 9-12
| 855 students
Rochambeau-the French Intl School
Rochambeau-the French Intl School Photo
Special Program Emphasis
9600 Forest Road
Bethesda, MD 20814
(301) 530-8260
Grades: PK-12
| 1,114 students
Stone Ridge School of the Sacred Heart
Stone Ridge School of the Sacred Heart Photo - Stone Ridge School of the Sacred Heart - Hamilton House
All-girls (Catholic)
9101 Rockville Pike
Bethesda, MD 20814
(301) 657-4322
Grades: PK-12
| 809 students
West Nottingham Academy
West Nottingham Academy Photo - Our 120-acre campus is just an hour's drive from Baltimore or Philadelphia and 25 minutes from the Univ. of Delaware's campus - all perfect for weekend activities and cultural events.
(4)
1079 Firetower Road
Colora, MD 21917
(410) 658-9260
Grades: 9-12
| 105 students
Friends Meeting School
Friends Meeting School Photo - Our Great Garden Heroes club donates our organic fruits & vegetables to the Frederick County Foodbank!
(Friends)
(10)
3232 Green Valley Road
Ijamsville, MD 21754
(301) 798-0288
Grades: K-12
| 110 students

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