South Mountain School

2 Southern Slope Drive
Millburn, NJ 07041
(School attendance zone shown in map)
10/
10
Top 5%
Serving 284 students in grades Prekindergarten-4, South Mountain School ranks in the top 5% of all schools in New Jersey for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).
The percentage of students achieving proficiency in math is 80-84% (which is higher than the New Jersey state average of 36%). The percentage of students achieving proficiency in reading/language arts is 80-84% (which is higher than the New Jersey state average of 49%).
The student:teacher ratio of 9:1 is lower than the New Jersey state level of 11:1.
Minority enrollment is 77% of the student body (majority Asian), which is higher than the New Jersey state average of 61% (majority Hispanic and Black).

Quick Stats (2024-25)

  • School Type: Magnet School
  • Grades: Prekindergarten-4
  • Enrollment: 284 students
  • Student:Teacher Ratio: 9:1
  • Minority Enrollment: 77%
  • : Top 5% in NJ
  • : 80-84% (Top 5%)
  • : 80-84% (Top 5%)
  • Source: National Center for Education Statistics (NCES), NJ Dept. of Education

Top Rankings

South Mountain School ranks among the top 20% of public schools in New Jersey for:

School Overview

South Mountain School's student population of 284 students has stayed relatively flat over five school years.
The teacher population of 30 teachers has grown by 11% over five school years.
School Type
Grades Offered
Grades Prekindergarten-4
Total Students
284 students
This chart displays total students of South Mountain School by year, with the latest 2022-23 school year data.
Gender %
This chart displays gender of South Mountain School
Total Classroom Teachers
30 teachers
This chart displays the total teachers of South Mountain School by year, with the latest 2022-23 school year data.
Students by Grade
This chart displays the students of South Mountain School by grade.

School Rankings

South Mountain School ranks within the top 5% of all 2,201 schools in New Jersey (based off of combined math and reading proficiency testing data).
The diversity score of South Mountain School is 0.62, which is less than the diversity score at state average of 0.72. The school's diversity has stayed relatively flat over five school years.
This School
State Level (NJ)
#53 out of 2201 schools
(Top 5%)
This chart displays the overall school rank of South Mountain School, with the latest 2021-22 school year data.
80-84%
36%
This chart displays the percentage of students that scored at or above 'proficient' levels in Math of South Mountain School and the percentage of public school students that scored at or above 'proficient' levels in Math of public schools in New Jersey by year, with the latest 2021-22 school year data.
80-84%
49%
This chart displays the percentage of students that scored at or above 'proficient' levels in Reading/Language Arts of South Mountain School and the percentage of public school students that scored at or above 'proficient' levels in Reading/Language Arts of New Jersey by year, with the latest 2021-22 school year data.
Student : Teacher Ratio
9:1
11:1
This chart displays the student teacher ratio of South Mountain School and the public school average student teacher ratio of New Jersey by year, with the latest 2022-23 school year data.
American Indian
n/a
n/a
Asian
56%
10%
This chart displays the percentage of Asian students in South Mountain School and the percentage of Asian public school students in New Jersey by year, with the latest 2022-23 school year data.
Hispanic
5%
33%
This chart displays the percentage of Hispanic students in South Mountain School and the percentage of Hispanic public school students in New Jersey by year, with the latest 2022-23 school year data.
Black
5%
15%
This chart displays the percentage of Black students in South Mountain School and the percentage of Black public school students in New Jersey by year, with the latest 2022-23 school year data.
White
23%
39%
This chart displays the percentage of White students in South Mountain School and the percentage of White public school students in New Jersey by year, with the latest 2022-23 school year data.
Hawaiian
n/a
n/a
Two or more races
11%
3%
This chart displays the percentage of students of two or more races in South Mountain School and the percentage of public school students of two or more races in New Jersey by year, with the latest 2022-23 school year data.
All Ethnic Groups
This chart displays the percentage breakdown of students of all ethnic groups in South Mountain School.
This chart displays the percentage breakdown of public school students of all ethnic groups in New Jersey.
0.62
This chart displays the diversity score of South Mountain School and the public school average diversity score of New Jersey by year, with the latest 2022-23 school year data.
Eligible for Free Lunch
1%
31%
This chart displays the percentage of students who is eligible for free lunch in South Mountain School and the percentage of public school students who is eligible for free lunch in New Jersey by year, with the latest 2022-23 school year data.
Eligible for Reduced Lunch (14-15)
1%
5%
Source: National Center for Education Statistics (NCES), NJ Dept. of Education

Frequently Asked Questions

What is South Mountain School's ranking?
South Mountain School is ranked #53 out of 2,201 schools, which ranks it among the top 5% of public schools in New Jersey.
What schools are South Mountain School often compared to?
South Mountain Schoolis often viewed alongside schools like Wyoming School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
80-84% of students have achieved math proficiency (compared to the 36% NJ state average), while 80-84% of students have achieved reading proficiency (compared to the 49% NJ state average).
How many students attend South Mountain School?
284 students attend South Mountain School.
What is the racial composition of the student body?
56% of South Mountain School students are Asian, 23% of students are White, 11% of students are Two or more races, 5% of students are Hispanic, and 5% of students are Black.
What is the student:teacher ratio of South Mountain School?
South Mountain School has a student ration of 9:1, which is lower than the New Jersey state average of 11:1.
What grades does South Mountain School offer ?
South Mountain School offers enrollment in grades Prekindergarten-4
What school district is South Mountain School part of?
South Mountain School is part of Millburn Township School District.

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Quick Stats (2024-25)

  • School Type: Magnet School
  • Grades: Prekindergarten-4
  • Enrollment: 284 students
  • Student:Teacher Ratio: 9:1
  • Minority Enrollment: 77%
  • : Top 5%
  • : 80-84% (Top 5%)
  • : 80-84% (Top 5%)
  • Source: National Center for Education Statistics (NCES), NJ Dept. of Education

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