Average
#953 of 2,463 schools in NJ
Top 39% in state
William Mason School
Elementary School · Montville Township School District
5 SHAWNEE TRAIL, Montville, NJ 07045
Enrollment
290
Student-Teacher
9.1:1
Score
6.9
Grades
Kindergarten – 5th
Enrollment
290
Student-Teacher
9.1:1
Score
6.9
Grades
Kindergarten – 5th
Updated
2022-23
Updated 2022-23
How this school compares
In Montville
#3 of 3
public schools
New Jersey elementary schools
#574 of 1,496
In district
#7 of 7
Montville Township School District
School environment
9.2 / 10
Exceptional
About William Mason School
William Mason School serves 290 students in kindergarten through fifth grade in Montville, New Jersey, offering an intimate learning environment with a 9.1:1 student-teacher ratio and 32 full-time equivalent teachers. This elementary school has earned recognition as one of New Jersey's top-performing schools, ranking #169 out of 2,475 elementary schools statewide and placing in the 93rd percentile with a MySchoolScout rating of 7.9 out of 10. Academically, William Mason School demonstrates strong performance with 72% of students achieving proficiency or above in English Language Arts and Reading, while 67% reach proficiency in Mathematics.
The school's academic score of 8.9 out of 10 reflects its commitment to educational excellence and student achievement across all grade levels. Located at 5 Shawnee Trail, the school serves a highly educated community where 68% of residents hold bachelor's degrees or higher, with a median household income of $163,047 and a low poverty rate of just 2.1%. The neighborhood's median home value of $649,900 reflects the area's desirability and investment in education.
William Mason School operates within this affluent suburban setting in Morris County, providing elementary education to families in this well-established community of over 10,000 residents.
What Parents Should Know
With a student-teacher ratio of 9.1:1, William Mason School offers a notably low ratio compared to the national average. This typically means smaller class sizes and more opportunities for one-on-one interaction between students and teachers.
Score Breakdown
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William Mason School — Students at William Mason School score 70% proficient, which is above what's typical for similar communities (expected: 62%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
5.2%
Students qualifying for federal meal assistance
Test Scores NJ NJSLA (2023-24)
Based on 13 test records from NJ state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 4.7/10.
How William Mason School Compares
See how William Mason School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 77% (2019) to 67% (2022). Reading/ELA proficiency has declined from 82% (2019) to 72% (2022).
Location
5 SHAWNEE TRAIL, Montville, NJ 07045
Nearby Alternatives
Families considering William Mason School may also want to explore other elementary schools in the area. Cedar Hill School (rated 9.3/10, 2.4 miles away, in nearby Towaco), which scores notably higher. Another option is Valley View School (rated 8.7/10, 3.1 miles away, in nearby Montville Township), which scores notably higher. Additionally, Rockaway Valley School (rated 7.6/10, 2.4 miles away, in nearby Boonton Township), which scores slightly higher. For more schools in Montville, see our Montville schools guide .
Nearby Schools
20 within 3.1 mi| School | Distance | Rating |
|---|---|---|
| Boonton High School Boonton | 1.9 mi | 6.2 |
| THE CRAIG SCHOOL HIGH SCHOOL Montville | 1.8 mi | 6.9 |
| CRAIG SCHOOL, HIGH SCHOOL Montville | 1.8 mi | 6.5 |
| John Hill School Boonton | 2.0 mi | 7.7 |
| School Street School Boonton | 2.0 mi | 5.9 |
| OUR LADY OF MOUNT CARMEL SCHOOL Boonton | 2.0 mi | 5.1 |
| SEDES SAPEINTIAE SCHOOL INC Boonton | 2.0 mi | — |
| ALPHABETLAND Boonton | 2.2 mi | — |
| Robert R Lazar Middle School Montville | 2.3 mi | 8.8 |
| TRINITY CHRISTIAN SCHOOL Montville | 2.7 mi | 7.6 |
| APPLE MONTESSORI SCHOOL OF TOWACO Towaco | 2.1 mi | — |
| Montville Township High School Montville | 2.6 mi | 8.0 |
| ABC'S OF LEARNING Towaco | 2.3 mi | — |
| Knollwood Elementary School Parsippany | 3.1 mi | 7.5 |
| Cedar Hill School Towaco | 2.4 mi | 9.3 |
| Rockaway Valley School Boonton Township | 2.4 mi | 7.6 |
| SHEPARD SCHOOL Kinnelon | 3.3 mi | 6.6 |
| Valley View School Montville Township | 3.1 mi | 8.7 |
| Lake Hiawatha Elementary School Parsippany | 3.6 mi | 7.4 |
| Mountain Lakes High School Mountain Lakes | 3.1 mi | 8.8 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 07045 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$179,279
Median Home Value
$647,200
Median Rent
$3,501/mo
Population
10,206
College Educated
67.6%
Homeownership
97.8%
Avg Commute
34.6 min
Poverty Rate
2.9%
Median Age
48.6
Community Profile
The community surrounding William Mason School has a median household income of $179,279. It is a well-educated community where 68% of adults hold a bachelor's degree or higher. The median home value in the area is $647,200, with a median rent of $3,501/month. The local poverty rate of 2.9% is relatively low. The average commute in the area is 35 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| C. Richard Applegate School Freehold, NJ | 6.9 |
| Dennis B O'Brien Elementary School Dover, NJ | 6.9 |
| Forest Avenue School Verona, NJ | 6.9 |
| Grover Cleveland Elementary School Newark, NJ | 6.9 |
| MOSDOS OF GREENVILLE Jersey City, NJ | 6.9 |
| Morgan Elementary School Hamilton, NJ | 6.9 |
Frequently Asked Questions
Common questions about William Mason School
What grades does William Mason School serve?
William Mason School serves students in grades Kindergarten through 5th.
How many students attend William Mason School?
William Mason School has an enrollment of approximately 290 students.
What is the student-teacher ratio at William Mason School?
The student-teacher ratio at William Mason School is 9.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does William Mason School rank in NJ?
William Mason School is ranked #953 out of 2,463 schools in NJ.
What is William Mason School's MySchoolScout rating?
William Mason School has a composite rating of 6.9 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at William Mason School?
Based on the most recent state assessment data, William Mason School has 64.9% math proficiency and 71.2% reading/ELA proficiency.
Is William Mason School a charter school?
No, William Mason School is not a charter school. It is a traditional public school operated by the local school district.
Is William Mason School a Title I school?
No, William Mason School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for William Mason School?
5.2% of students at William Mason School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 5th
- Enrollment
- 290
- Student-Teacher Ratio
- 9.1:1
- Teachers (FTE)
- 32
- Free/Reduced Lunch
- 5.2%
- Type
- regular
- Setting
- Large Suburb
- County
- Morris County
- Phone
- (973) 331-7100
- Data Year
- 2023–2024
Resources & Links
District
Montville Township School District- District Enrollment
- 3,472
- Schools in District
- 7
- Per-Pupil Spending
- $29,250
- District Rank
- #7 of 7
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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