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.
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.
The this entity record above pulls directly from NCES Common Core of Data and EDFacts. What follows is the per-entity context — how this entity sits in the broader U.S. K-12 school outcomes and enrollment distribution and which underlying factors drive the headline numbers.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.