South Mountain School
Public
Elementary Grades PK–4
Part of Millburn Township School District
2 SOUTHERN SLOPE DRIVE, MILLBURN, NJ 07041 · (973) 921-1394
Community ratings
Not rated yetBe the first neighbor to rate this school — an overall score plus Teachers, Communication, Safety and Activities.
Academic performance
Math proficiency77%
State average 25.4%
Reading / language arts77%
State average 47.3%
EDFacts via Urban Institute Education Data Portal (SY2020-21)
At a glance
278Students enrolled
10:1Student–teacher ratio
3%Free / reduced lunch
SuburbSetting
Regular SchoolSchool type
Enrollment by grade
Pre-K42
Kindergarten41
Grade 145
Grade 244
Grade 349
Grade 457
Students
Asian · 55%153
White · 26%73
Two or more races · 8%23
Hispanic · 6%16
Black · 5%13
Counts as reported to NCES; percentages are of students with a reported race/ethnicity.
Enrollment · last 5 years
274’20
288’21
284’22
285’23
278’24
Location
2 SOUTHERN SLOPE DRIVE MILLBURN
Neighbor reviews
Sign in to rate this school.
School facts from the U.S. Department of Education (NCES), 2024-2025 school year. Academic scores from the EDFacts via Urban Institute Education Data Portal (SY2020-21). Community ratings and reviews reflect neighbor opinions, not an official measure of school quality.