Serving 772 students in grades 3-5, Millstone River School ranks in the top 30% of all schools in New Jersey for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 64% (which is higher than the New Jersey state average of 38%). The percentage of students achieving proficiency in reading/language arts is 64% (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 92% of the student body (majority Asian), which is higher than the New Jersey state average of 63% (majority Hispanic and Black).
Quick Facts (2026)
- Grades: 3-5
- Enrollment: 772 students
- Student-Teacher Ratio: 9:1
- Minority Enrollment: 92%
- Overall Testing Rank: Top 30% in NJ
- Math Proficiency: 64% (Top 20%)
- Reading Proficiency: 64% (Top 30%)
- Science Proficiency: 53% (Top 10%)
- Source: National Center for Education Statistics (NCES), NJ Dept. of Education
Top Rankings
Millstone River School ranks among the top 20% of public schools in New Jersey for:
Category
Attribute
Math Proficiency
Science Proficiency
Student Attention
School Overview
Millstone River School's student population of 772 students has declined by 20% over five school years.
The teacher population of 84 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 3-5
(No virtual instruction)
(No virtual instruction)
Total Students
772 students
Total Classroom Teachers
84 teachers
Last Day of School
Tue. Jun 16, 2026
School Rankings
Millstone River School ranks within the top 30% of all 2,184 schools in New Jersey (based off of combined math and reading proficiency testing data).
The diversity score of Millstone River School is 0.40, 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.
Overall Testing Rank
#461 out of 2184 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
64%
38%
Reading/Language Arts Test Scores (% Proficient)
64%
49%
Science Test Scores (% Proficient)
53%
23%
Student-Teacher Ratio
9:1
11:1
American Indian
1%
n/a
Asian
77%
11%
Hispanic
5%
35%
Black
5%
14%
White
8%
37%
Hawaiian
n/a
n/a
Two or more races
4%
3%
All Ethnic Groups
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
9%
38%
Eligible for Reduced Lunch
2%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NJ Dept. of Education
Frequently Asked Questions
What is Millstone River School's ranking?
Millstone River School is ranked #461 out of 2,184 schools, which ranks it among the top 30% of public schools in New Jersey.
What schools are Millstone River School often compared to?
Millstone River Schoolis often viewed alongside schools like J.v.b. Wicoff Elementary School, Town Center Elementary School At Plainsboro by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
64% of students have achieved math proficiency (compared to the 38% NJ state average), while 64% of students have achieved reading proficiency (compared to the 49% NJ state average).
How many students attend Millstone River School?
772 students attend Millstone River School.
What is the racial composition of the student body?
77% of Millstone River School students are Asian, 8% of students are White, 5% of students are Hispanic, 5% of students are Black, 4% of students are Two or more races, and 1% of students are American Indian.
What is the student-teacher ratio of Millstone River School?
Millstone River School has a student ration of 9:1, which is lower than the New Jersey state average of 11:1.
What grades does Millstone River School offer ?
Millstone River School offers enrollment in grades 3-5 (No virtual instruction).
What school district is Millstone River School part of?
Millstone River School is part of West Windsor-Plainsboro Regional School District.
School Reviews
4 10/10/2025
Millstone school is a good school to go to. I am in 4th grade and I have been here for three years (kindergarten,3rd 4th.) They have nice ativities to do and nice teachers. They have a good music department and gym is really fun but art is okay considering you don't get to do much. Like in third grade from the other school.They moved out kindergarten and moved in 3rd grade! I was the first class to be in 3rd grade!
Review Millstone River School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.
