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A

Deerfield Elementary School

PublicMiddleGrades 3–8

302 Central Avenue, Mountainside, NJ 07092 · (908) 232-8828 · Part of Mountainside Borough School District

Mountainside’s School Grade A+ better than 96% of New Jersey school districts

Directions
Students
483
Students per teacher
11:1
Free or reduced lunch
3%
Setting
Suburb
Grades
3–8
The gist

What stands out about Deerfield Elementary School

  • Its own letter, A: reading and math results near the top of New Jersey’s public schools
  • Math proficiency 24 pts above the state
  • Reading / language arts 19 pts above the state
  • Small classes: 11 students per teacher

On the path

Where Mountainside kids come from and go next. The whole path →

PK–2Beechwood School265 students
3–8Deerfield Elementary SchoolYou are here

Test scores

2020–21
Math proficiency49%
State average 25.4%
Reading / language arts66%
State average 47.3%

Its own letter, A, places these results among New Jersey’s 2,144 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

302 Central Avenue, Mountainside

Students

Enrollment by grade
Grade 376
Grade 492
Grade 574
Grade 677
Grade 783
Grade 881
Enrollment over time
461’20
481’21
467’22
488’23
483’24

Up 4.8% since 2020–21.

Who goes here
White 69%Hispanic 13%Asian 9%Two or more races 7%Black <1%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Deerfield Elementary School from Mountainside families.

Other schools in Mountainside Borough School District

The district →
Beechwood School
Elementary · Grades PK–2 · Mountainside
265 students13:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against New Jersey’s other public schools; Mountainside’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.