Total enrollment
748
+31 (+4%) vs SY 2020-21
2 schools in Mountainside School District
New Jersey · 748 students · 1 city
Mountainside School District's public schools total 2 across the district, with enrollment of about 748 and an average school size near 374.
4-year change in Mountainside School District
SY 2020-21 vs SY 2024-25School count
2
0 (0%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Mountainside School District ranks
Among districts| Measure | This district | In New Jersey | In the US |
|---|---|---|---|
| Enrollment ranked largest first | 748 | #333 of 372 | #7,995 of 9,234 |
| Number of schools ranked most first | 2 | #335 of 372 | N/A |
| Students per teacher ranked fewest first | 11.5:1 | #225 of 370 | #1,520 of 9,044 |
| Free or reduced-price lunch share ranked highest first | 3.2% | #331 of 369 | #8,100 of 8,164 |
Districts need at least 2 schools and 500 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Inside Mountainside School District
Since 2017-18, the 2 district schools that reported both years went from 729 to 748 students (up 3%) and from 66 to 65 full-time teachers (down 2%), as of 2024-25.
Proficient is the average share of students meeting the state standard across each school's state tests in 2023-24 and 2024-25; schools with fewer than 100 students and schools serving specialized populations are left out. Staffing figures come from the NCES Common Core of Data and count only schools that reported students and teachers in both years.
| Name | City | Level | Grades | Enrollment |
|---|---|---|---|---|
| Deerfield Elementary School | Mountainside | Middle | 03-08 | 483 |
| Beechwood School | Mountainside | Elementary | PK-02 | 265 |
About Mountainside School District
As a sparse district in New Jersey, Mountainside School District educates 748 students across 2 schools.
In terms of grade levels, Mountainside School District is built around 1 elementary and 1 middle.
Per-school enrollment averages around 374 in this district, noticeably below the New Jersey typical of 540.
Looking at the last 4 years. Total public-school enrollment in Mountainside School District has rose 4% since SY 2020-21, moving from about 717 students to 748.
Within the allk12 community for this area, the community for Mountainside School District discusses sports rivalries, cross-district programs, and shared facilities. Discussions cut across districts, schools, and grade levels.