| 👨🏫 Class Size | 9.6:1 student-teacher ratio |
| 💰 Funding | $26,559 per student |
| 🏫 School Type | Regular |
| Address | 2 SOUTHERN SLOPE DRIVE |
| City | Millburn |
| ZIP Code | 07041 |
| District | 3410200 |
| NCES School ID | 341020000230 |
| Data Year | 2024-25 |
Understanding the community around South Mountain School helps evaluate the school environment and neighborhood.
| Median Household Income | $199,602 |
| Per Capita Income | $91,060 |
| Poverty Rate | 4.2% |
| Households Earning $100K+ | 69.2% |
| Bachelor's Degree or Higher | 82.2% |
| High School or Higher | 96.6% |
| Median Home Value | $941,800 |
| Median Rent | $1,933 |
| Owner-Occupied | 69.0% |
| Renter-Occupied | 31.0% |
Thinking about moving into this school’s area? See what homes and rents actually cost in ZIP 07041 — values, rent, and how it compares to nearby ZIPs. Free, no signup. See 07041 housing costs →
Enrollment and demographic breakdown for South Mountain School.
| Total Enrollment | 285 |
| Teachers (FTE) | 29.8 |
| Student:Teacher Ratio | 9.6:1 |
Traditional school ratings rely heavily on standardized test scores, which often reflect family income more than actual school quality. Repit takes a different approach.
We evaluate schools based on factors that research shows actually impact educational outcomes:
Data source: NCES CCD 2024-25 | Last updated: September 2026