Schools in Mountainside School District, New Jersey (2025)
2 schools · 748 students · 2 public · median Enrollment 483.
Mountainside School District, in New Jersey, has 2 schools in United States's 2025 data, together educating about 748 students. By level there are 1 middle, 1 elementary; by sector 2 public.
2 of the 2 schools qualify for the Success Index (US). The highest-scoring is Deerfield Elementary School (93.9, top 5% of middle schools nationally), followed by Beechwood School (86.6, top 5% of elementary schools nationally). 2 schools sit in the top 10% of United States for their type. Scores are percentiles within school type, so compare an elementary school with other elementary schools.
The largest schools are Deerfield Elementary School (483 students), Beechwood School (265 students).
Ranked schools in Mountainside School District
Ordered by Success Index (US). Rank positions shown on each profile are within United States and New Jersey.
- 194Deerfield Elementary SchoolMountainside · Public Middle73% Math proficiency · 483 students
- 287Beechwood SchoolMountainside · Public Elementary3.8% Free/reduced-price lunch · 265 students
| # | School | Sector | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Deerfield Elementary School Mountainside · Middle · Grades 3–8 | Public | 93.9 Top 5% | 73% Math proficiency | 483 |
| 2 | Beechwood School Mountainside · Elementary · Grades PK–2 | Public | 86.6 Top 5% | 3.8% Free/reduced-price lunch | 265 |
Compare the top 2 schools in Mountainside School District side by side →
Other places in New Jersey
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- Bloomfield(10)
- Old Bridge(10)
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Frequently asked questions
What is the best school in Mountainside School District?
Deerfield Elementary School is the highest-ranked school in Mountainside School District with a Success Index (US) of 93.9 out of 100 (Top 5% of middle schools in United States).
How many schools are in Mountainside School District?
Mountainside School District has 2 schools (1 middle, 1 elementary) educating 748 students in 2025.
What is the typical Enrollment in Mountainside School District?
The median Enrollment across schools in Mountainside School District is 483. Students enrolled in the latest NCES directory year.