Top Rankings
Mountainside School District ranks among the top 20% of public school district in New Jersey for:
Category
Attribute
Overall Rank
Highest overall rank (Top 10%)
Math Proficiency
Highest math proficiency (Top 5%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 10%)
Science Proficiency
Highest science proficiency (Top 20%)
For the 2025 school year, there are 2 public schools serving 748 students in Mountainside School District. This district's average testing ranking is 10/10, which is in the top 5% of public schools in New Jersey.
Public Schools in Mountainside School District have an average math proficiency score of 72% (versus the New Jersey public school average of 36%), and reading proficiency score of 81% (versus the 49% statewide average).
Minority enrollment is 31% of the student body (majority Hispanic), which is less than the New Jersey public school average of 62% (majority Hispanic).
Overview
This School District
This State (NJ)
# Schools
2 Schools
2,573 Schools
# Students
748 Students
1,360,617 Students
# Teachers
73 Teachers
116,573 Teachers
Student : Teacher Ratio
10:1
10:1
District Rank
Mountainside School District, which is ranked within the top 5% of all 646 school districts in New Jersey (based off of combined math and reading proficiency testing data) for the 2021-2022 school year.
Overall District Rank
#33 out of 650 school districts
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
72%
36%
Reading/Language Arts Test Scores (% Proficient)
81%
49%
Science Test Scores (% Proficient)
40-44%
23%
Students by Ethnicity:
Diversity Score
0.50
0.72
# American Indian Students
1 Student
2,837 Students
% American Indian Students
n/a
n/a
# Asian Students
64 Students
141,451 Students
% Asian Students
9%
10%
# Hispanic Students
99 Students
458,869 Students
% Hispanic Students
13%
34%
# Black Students
10 Students
195,970 Students
% Black Students
1%
15%
# White Students
515 Students
515,021 Students
% White Students
69%
38%
# Hawaiian Students
1 Student
2,719 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
58 Students
42,985 Students
% of Two or more races Students
8%
3%
Students by Grade:
# Students in PK Grade:
22
61,597
# Students in K Grade:
65
91,086
# Students in 1st Grade:
98
93,943
# Students in 2nd Grade:
75
96,713
# Students in 3rd Grade:
92
95,865
# Students in 4th Grade:
72
97,373
# Students in 5th Grade:
78
98,202
# Students in 6th Grade:
85
99,575
# Students in 7th Grade:
82
100,830
# Students in 8th Grade:
79
101,895
# Students in 9th Grade:
-
107,031
# Students in 10th Grade:
-
106,285
# Students in 11th Grade:
-
106,937
# Students in 12th Grade:
-
103,061
# Ungraded Students:
-
224
District Revenue and Spending
The revenue/student of $30,774 is higher than the state median of $26,931. The school district revenue/student has stayed relatively flat over four school years.
The school district's spending/student of $28,909 is higher than the state median of $25,828. The school district spending/student has stayed relatively flat over four school years.
Total Revenue
$23 MM
$36,642 MM
Spending
$22 MM
$35,142 MM
Revenue / Student
$30,774
$26,931
Spending / Student
$28,909
$25,828
Best Mountainside School District Public Schools (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Deerfield Elementary School
(Math: 72% | Reading: 81%)
Rank:
Rank:
10/
Top 10%10
302 Central Avenue
Mountainside, NJ 07092
(908) 232-8828
Mountainside, NJ 07092
(908) 232-8828
Grades: 3-8
| 488 students
Rank: n/an/a
1497 Woodacres Dr
Mountainside, NJ 07092
(908) 301-9104
Mountainside, NJ 07092
(908) 301-9104
Grades: PK-2
| 260 students
Frequently Asked Questions
How many schools belong to Mountainside School District?
Mountainside School District manages 2 public schools serving 748 students.
What is the rank of Mountainside School District?
Mountainside School District is ranked #30 out of 646 school districts in New Jersey (top 5%) based off of combined math and reading proficiency testing data for the 2021-2022 school year. This district ranks in the top 20% of New Jersey school districts for: Highest overall rank (Top 10%), Highest math proficiency (Top 5%), Highest reading/language arts proficiency (Top 10%) and Highest science proficiency (Top 20%)
What is the racial composition of students in Mountainside School District?
69% of Mountainside School District students are White, 13% of students are Hispanic, 9% of students are Asian, 8% of students are Two or more races, and 1% of students are Black.
What is the student/teacher ratio of Mountainside School District?
Mountainside School District has a student/teacher ratio of 10:1, which is lower than the New Jersey state average of 12:1.
What is Mountainside School District's spending/student ratio?
The school district's spending/student of $28,909 is higher than the state median of $25,828. The school district spending/student has stayed relatively flat over four school years.
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