William Mason School

William Mason School is a cozy elementary-level community in MONTVILLE, New Jersey, part of Montville Township School District. The school works with 285 students in grades K through 5. That puts it 30% below the typical public school in New Jersey, which averages around 405 students.

Within Montville Township School District, which oversees 7 schools and 3,500 students, William Mason School is one campus in the system.

In terms of who attends, William Mason School lists that the largest single group is White, at 72% of enrollment. The remainder is composed of 13% Asian, 11% Hispanic, 3% multiracial. That composition is broadly in line with Morris County as a whole.

Looking at school resources, Staff filings list 31 full-time-equivalent teachers, which works out to roughly 9.3:1 students per teacher. That figure is tighter than the state norm's 11.4:1 average. Around 4% of the student body qualifies for free or reduced-price meals, which schools and policymakers use as a rough income-mix signal. Set against Morris County (around 19%), the school's rate is meaningfully below typical.

On a demographically-adjusted basis, William Mason School tracks the demographic baseline. The model predicts 64.0% given the school's FRL share; actual proficiency is 63.5%.

Zooming out to the county, census data for Morris County shows median household earnings sit near $137,326, 58% of adults hold a bachelor's degree or higher, and the poverty rate sits near 3%. In all, Morris County runs 156 public schools (combined enrollment of about 72,239 students), of which William Mason School is one.

Boonton High School is the nearest neighboring public school, about 1.9 miles from this campus. Within five miles, there are 8 other public schools. On composite proficiency, William Mason School comes 6th of 8 in the immediate cluster, behind the nearby-schools average of 64.6%.

Geographically, the school is in a bedroom-community area.

Five-year trend. Looking back 7 years, enrollment at William Mason School has rose 18%, going from 241 students in 2018 to 285 in 2025.

Inside the community feed, the page collects discussion, questions, and updates around science fair prep, picture-day reminders, and bus-route questions. Anyone with firsthand experience at this school can post or comment.