#1 Most Diverse Private Schools in Middlesex County, MA
Sudbury Valley School
Alternative school · Ungraded
Largest group: 32% of students
Framingham, MA
B+Overall grade68 students19 students per teacher
2026 lists
Most Diverse Private Schools in Middlesex County, MA
Private schools in Middlesex County, MA with the most varied mix of students. Top 50 of 80 schools.
#2 Most Diverse Private Schools in Middlesex County, MA
Lexington Christian Academy
Christian school (nondenominational) · Grades 6–12
Largest group: 34% of students
Lexington, MA
A+Overall grade290 students9 students per teacher
#3 Most Diverse Private Schools in Middlesex County, MA
Veritas Christian Academy
Christian school (nondenominational) · Grades Pre-K–8
Largest group: 39% of students
Wayland, MA
AOverall grade185 students9 students per teacher
#4 Most Diverse Private Schools in Middlesex County, MA
St. Theresa School
Parish school · Grades Pre-K–8
Largest group: 42% of students
Somerville, MA
AOverall grade126 students13 students per teacher
#5 Most Diverse Private Schools in Middlesex County, MA
St. Patrick School and Educational Center
Independent Catholic school · Grades K–8
Largest group: 42% of students
Lowell, MA
A+Overall grade84 students8 students per teacher
#6 Most Diverse Private Schools in Middlesex County, MA
New Covenant School
Christian school (nondenominational) · Grades Pre-K–5
Largest group: 42% of students
Arlington, MA
AOverall grade65 students9 students per teacher
#7 Most Diverse Private Schools in Middlesex County, MA
St. Anthony School
Parish school · Grades Pre-K–8
Largest group: 44% of students
Everett, MA
A+Overall grade168 students13 students per teacher
#8 Most Diverse Private Schools in Middlesex County, MA
Cheverus Catholic School
Parish school · Grades Pre-K–8
Largest group: 45% of students
Malden, MA
A+Overall grade289 students12 students per teacher
#9 Most Diverse Private Schools in Middlesex County, MA
Hillside School
Independent school · Grades 4–9
Largest group: 46% of students
Marlborough, MA
A+Overall gradeAll boys140 students5 students per teacher
#10 Most Diverse Private Schools in Middlesex County, MA
St. Joseph Elementary School
Parish school · Grades Pre-K–8
Largest group: 48% of students
Medford, MA
A+Overall grade147 students10 students per teacher
#11 Most Diverse Private Schools in Middlesex County, MA
Acera School
Independent school · Grades K–12
Largest group: 49% of students
Winchester, MA
A+Overall grade122 students5 students per teacher
#12 Most Diverse Private Schools in Middlesex County, MA
Academy of Notre Dame
Diocesan school · Grades Pre-K–12
Largest group: 50% of students
Tyngsboro, MA
A-Overall grade502 students11 students per teacher
#13 Most Diverse Private Schools in Middlesex County, MA
Groton School
Episcopal school · Grades 8–12
Largest group: 50% of students
Groton, MA
A+Overall grade381 students6 students per teacher
#14 Most Diverse Private Schools in Middlesex County, MA
Meadowbrook School of Weston
Independent school · Grades Pre-K–8
Largest group: 50% of students
Weston, MA
A+Overall grade295 students5 students per teacher
#15 Most Diverse Private Schools in Middlesex County, MA
Mount Hope Christian School
Assembly of God school · Grades Pre-K–6
Largest group: 50% of students
Burlington, MA
B+Overall grade159 students10 students per teacher
#16 Most Diverse Private Schools in Middlesex County, MA
Greater Boston Academy
Seventh-day Adventist school · Grades Pre-K–8
Largest group: 51% of students
Stoneham, MA
BOverall grade171 students14 students per teacher
#17 Most Diverse Private Schools in Middlesex County, MA
Community Christian Academy
Christian school (nondenominational) · Grades Pre-K–8
Largest group: 51% of students
Lowell, MA
B+Overall grade126 students13 students per teacher
#18 Most Diverse Private Schools in Middlesex County, MA
Brimmer & May School
Independent school · Grades Pre-K–12
Largest group: 52% of students
Chestnut Hill, MA
A+Overall grade394 students6 students per teacher
#19 Most Diverse Private Schools in Middlesex County, MA
Malden Catholic High School
Independent Catholic school · Grades 9–12
Largest group: 53% of students
Malden, MA
A+Overall grade863 students12 students per teacher
#20 Most Diverse Private Schools in Middlesex County, MA
Lowell Catholic
Diocesan school · Grades Pre-K–12
Largest group: 53% of students
Lowell, MA
B-Overall grade705 students11 students per teacher
#21 Most Diverse Private Schools in Middlesex County, MA
The Learning Center for the Deaf
Special education school · Grades Pre-K–12
Largest group: 53% of students
Framingham, MA
A+Overall grade155 students3 students per teacher
#22 Most Diverse Private Schools in Middlesex County, MA
Shady Hill School
Independent school · Grades Pre-K–8
Largest group: 54% of students
Cambridge, MA
A-Overall grade496 students7 students per teacher
#23 Most Diverse Private Schools in Middlesex County, MA
Cambridge Friends School
Quaker (Friends) school · Grades Pre-K–8
Largest group: 55% of students
Cambridge, MA
A+Overall grade122 students7 students per teacher
#24 Most Diverse Private Schools in Middlesex County, MA
Belmont Day School
Independent school · Grade 1
Largest group: 58% of students
Belmont, MA
A+Overall grade334 students4 students per teacher
From official public records, updated October 2026.