Serving 285 students in grades Kindergarten-5, William Mason School ranks in the top 10% of all schools in New Jersey for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 70-74% (which is higher than the New Jersey state average of 38%). The percentage of students achieving proficiency in reading/language arts is 70-74% (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 28% of the student body (majority Asian), which is lower than the New Jersey state average of 63% (majority Hispanic).
Quick Facts (2026)
- Grades: Kindergarten-5
- Enrollment: 285 students
- Student-Teacher Ratio: 9:1
- Minority Enrollment: 28%
- Overall Testing Rank: Top 10% in NJ
- Math Proficiency: 70-74% (Top 10%)
- Reading Proficiency: 70-74% (Top 20%)
- Science Proficiency: 30-39% (Top 30%)
- Source: National Center for Education Statistics (NCES), NJ Dept. of Education
Top Rankings
William Mason School ranks among the top 20% of public schools in New Jersey for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Student Attention
School Overview
William Mason School's student population of 285 students has grown by 19% over five school years.
The teacher population of 31 teachers has grown by 14% over five school years.
Grades Offered
Grades Kindergarten-5
(No virtual instruction)
(No virtual instruction)
Total Students
285 students
Total Classroom Teachers
31 teachers
School Calendar
Last Day of School
Mon. Jun 15, 2026
School Motto
Educate. Inspire. Empower.
School Rankings
William Mason School ranks within the top 10% of all 2,184 schools in New Jersey (based off of combined math and reading proficiency testing data).
The diversity score of William Mason School is 0.46, 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
#213 out of 2184 schools
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
70-74%
38%
Reading/Language Arts Test Scores (% Proficient)
70-74%
49%
Science Test Scores (% Proficient)
30-39%
23%
Student-Teacher Ratio
9:1
11:1
American Indian
n/a
n/a
Asian
13%
11%
Hispanic
11%
35%
Black
1%
14%
White
72%
37%
Hawaiian
n/a
n/a
Two or more races
3%
3%
All Ethnic Groups
Eligible for Free Lunch
4%
38%
Eligible for Reduced Lunch
1%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NJ Dept. of Education
Frequently Asked Questions
What is William Mason School's ranking?
William Mason School is ranked #213 out of 2,184 schools, which ranks it among the top 10% of public schools in New Jersey.
What schools are William Mason School often compared to?
William Mason Schoolis often viewed alongside schools like Valley View School, Riverview Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
70-74% of students have achieved math proficiency (compared to the 38% NJ state average), while 70-74% of students have achieved reading proficiency (compared to the 49% NJ state average).
How many students attend William Mason School?
285 students attend William Mason School.
What is the racial composition of the student body?
72% of William Mason School students are White, 13% of students are Asian, 11% of students are Hispanic, 3% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of William Mason School?
William Mason School has a student ration of 9:1, which is lower than the New Jersey state average of 11:1.
What grades does William Mason School offer ?
William Mason School offers enrollment in grades Kindergarten-5 (No virtual instruction).
What school district is William Mason School part of?
William Mason School is part of Montville Township School District.
School Reviews
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