For the 2026 school year, there are 2 public elementary schools serving 748 students in Mountainside, NJ.
The top-ranked public elementary school in Mountainside, NJ is Deerfield Elementary School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Mountainside, NJ public elementary schools have an average math proficiency score of 76% (versus the New Jersey public elementary school average of 39%), and reading proficiency score of 81% (versus the 49% statewide average). Elementary schools in Mountainside have an average ranking of 10/10, which is in the top 5% of New Jersey public elementary schools.
Minority enrollment is 31% of the student body (majority Hispanic), which is less than the New Jersey public elementary school average of 63% (majority Hispanic).
Best Public Elementary Schools in Mountainside, NJ (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Deerfield Elementary School
(Math: 76% | Reading: 81%)
Rank:
Rank:
10/
Top 10%10
302 Central Avenue
Mountainside, NJ 07092
(908) 232-8828
Mountainside, NJ 07092
(908) 232-8828
Gr: 3-8 | 488 students Student-teacher ratio: 10:1 Minority enrollment: 32%
Rank: n/an/a
1497 Woodacres Dr
Mountainside, NJ 07092
(908) 301-9104
Mountainside, NJ 07092
(908) 301-9104
Gr: PK-2 | 260 students Student-teacher ratio: 11:1 Minority enrollment: 30%
<麻豆果冻传媒 class='so-dt-title' id='faq'>Frequently Asked Questions
What are the top-ranked public elementary schools in Mountainside, NJ?
The top-ranked public elementary schools in Mountainside, NJ include Deerfield Elementary School.
How many public elementary schools are located in Mountainside?
2 public elementary schools are located in Mountainside.
What is the racial composition of students in Mountainside?
Mountainside public elementary schools minority enrollment is 31% of the student body (majority Hispanic), which is less than the New Jersey public elementary schools average of 63% (majority Hispanic).
Which public elementary schools in Mountainside are often viewed compared to one another?
Popular comparisons of public elementary schools in Mountainside include: Beechwood School vs. Deerfield Elementary School, Deerfield Elementary School vs. Beechwood School
麻豆果冻传媒 Articles
Should Your Child Attend Summer School? Key Signs
Should your child attend summer school? Learn the key signs, benefits, and expert guidance to make the right decision in 2026.
Preventing Summer Learning Loss: Strategies That Work
Discover proven strategies for preventing summer learning loss and keeping students academically engaged during the break.
Transfer Pathways Between Public School Districts 2026
A 2026 guide to transfer pathways between public school districts, including open enrollment, legal rules, and tips for families.