William Mason School
🇺🇸 Official data · 2025Montville, New Jersey 07045 · Montville Township School District
#34 of 1,479 elementary schools in New Jersey
#135 of 50,301 nationally
About William Mason School
William Mason School is a public elementary located in Montville, in the Montville Township School District school district of New Jersey, United States. It caters for Grades K–5. In 2025 it enrolled 285 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 94.6 out of 100, placing it in the top 5% of elementary schools in United States and 34th of 1,479 ranked elementary schools in New Jersey. Its strongest component is community advantage (fewer free/reduced-price lunch) (99th percentile), and its weakest is math proficiency (91th percentile).
Other published figures: enrollment 285.
There are 3 schools in Montville; William Mason School ranks 1st of 3 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)77%
- Reading proficiency (30%)82%
- Community advantage (fewer free/reduced-price lunch) (25%)3.9%
- Students per teacher (15%)9.5
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for William Mason School by the official sources.
- Enrollment
- 285
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 3.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 9.5
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 82%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 77%
- Share of tested students proficient or above (all students, all grades).
Free academic assessment
Is your child on grade level in reading and math?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Schools near William Mason School
Closest schools by straight-line distance, with their Success Index (US).
Boonton High School
Boonton · Public high · Grades 9–12
646 students · 3.1 km away
School Street School
Boonton · Public elementary · Grades PK–2
325 students · 3.2 km away
John Hill School
Boonton · Public middle · Grades 3–8
556 students · 3.2 km away
Robert R Lazar Middle School
Montville · Public middle · Grades 6–8
798 students · 3.7 km away
Rockaway Valley School
Boonton Township · Public elementary · Grades PK–8
396 students · 3.8 km away
Cedar Hill School
Towaco · Public elementary · Grades PK–5
329 students · 3.9 km away
Montville Township High School
Montville · Public high · Grades 9–12
1,035 students · 4.2 km away
Valley View School
Montville Township · Public elementary · Grades PK–5
360 students · 5.0 km away
Mountain Lakes High School
Mountain Lakes · Public high · Grades 9–12
546 students · 5.0 km away
Knollwood Elementary School
Lake Hiawatha · Public elementary · Grades K–5
394 students · 5.0 km away
Similar schools
Public elementary schools in New Jersey with a comparable Enrollment.
Alloway Township School
Alloway · Public elementary · Grades PK–8
285 students
Charles L. Spragg School
Egg Harbor City · Public elementary · Grades PK–3
285 students
Morgan Elementary School
Hamilton · Public elementary · Grades K–5
285 students
Thomas Jefferson School
Morristown · Public elementary · Grades 3–5
285 students
Middle Road School
Hazlet · Public elementary · Grades 1–4
285 students
Washington Avenue School
Chatham · Public elementary · Grades K–3
286 students
Frequently asked questions
Is William Mason School a good school?
William Mason School has a Success Index (US) of 94.6 out of 100 (Top 5% of elementary schools in United States) and ranks #34 of 1,479 in New Jersey. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does William Mason School rank in New Jersey?
William Mason School ranks #34 of 1,479 elementary schools in New Jersey and #135 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend William Mason School?
William Mason School had 285 students in 2025.
Is William Mason School a elementary school or a high school?
William Mason School is classified as a elementary covering Grades K–5. It is a public school.
What other schools are near William Mason School?
There are 10 schools within 15 km of William Mason School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.