William Mason School
Montville, NJ · Elementary School
William Mason School is a elementary school in Montville, NJ with 277 students enrolled and a 78% proficiency rate. Part of Montville Township School District. NCES data from the U.S. Department of Education.
William Mason School is a small elementary school in Montville, NJ, serving 277 students in the Montville Township School District. That headcount is below the 491-student average for schools in the district.
On the latest EDFacts assessments, 78% of students reached grade-level proficiency in combined math and reading — a rate near the top of the national distribution. That is 7 points above the 71% average for the Montville Township School District. Against the 56% New Jersey statewide average, the school sits 22 points higher.
Over the last three reported years the district proficiency rate this school inherits has risen by about 23 points.
The student-teacher ratio is 8.4 to 1, well below the U.S. average of about 16 to 1; unusually low ratios often reflect specialty programs or small-by-design campuses. A relatively low 4% of students qualify for free or reduced-price lunch.
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About This School
William Mason School is a elementary school located in Montville, New Jersey. The school serves 277 students. The student-to-teacher ratio is 8.4:1.
According to EDFacts assessment data, 78% of students meet grade-level proficiency standards in combined math and reading.
4% of students qualify for free or reduced-price lunch.
William Mason School is part of the Montville Township School District in New Jersey.
How This School Compares
William Mason School has 277 students enrolled, making it smaller than the average school in Montville Township School District (491 students). Its 78% proficiency rate is 7 percentage points above the district average of 71%. Compared to the New Jersey state average of 56%, the school performs 22 points higher. With a 8.4:1 student-teacher ratio, it offers smaller class sizes than the national average.
Frequently Asked Questions
William Mason School has 277 students enrolled. The student-to-teacher ratio is 8.4:1.
According to EDFacts data, 78% of students at William Mason School meet grade-level proficiency standards in combined math and reading assessments.
William Mason School is part of the Montville Township School District in Montville, New Jersey. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
Source: NCES Common Core of Data, 2026.