For the 2026 school year, there are 2 public schools serving 748 students in Mountainside, NJ (there are , serving 238 private students). 76% of all K-12 students in Mountainside, NJ are educated in public schools (compared to the NJ state average of 86%).
The top-ranked public 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 schools have an average math proficiency score of 76% (versus the New Jersey public school average of 38%), and reading proficiency score of 81% (versus the 49% statewide average). Schools in Mountainside have an average ranking of 10/10, which is in the top 5% of New Jersey public schools.
Minority enrollment is 31% of the student body (majority Hispanic), which is less than the New Jersey public school average of 62% (majority Hispanic).
Best Public 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%
Frequently Asked Questions
What are the top-ranked public schools in Mountainside, NJ?
The top-ranked public schools in Mountainside, NJ include Deerfield Elementary School.
How many public schools are located in Mountainside?
2 public schools are located in Mountainside.
What percentage of students in Mountainside go to public school?
76% of all K-12 students in Mountainside are educated in public schools (compared to the NJ state average of 86%).
What is the racial composition of students in Mountainside?
Mountainside public schools minority enrollment is 31% of the student body (majority Hispanic), which is less than the New Jersey public schools average of 62% (majority Hispanic).
Which public schools in Mountainside are often viewed compared to one another?
Popular comparisons of public schools in Mountainside include: Beechwood School vs. Deerfield Elementary School, Deerfield Elementary School vs. Beechwood School
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