A+ Top 7%

Winn Brook School

Grades K-03 BELMONT, MA

Moved up 20 places from 2024 to 2025

#59 State Rank
A+ District Grade
97 Waterhouse Road, BELMONT, MA 02478
Diverse
Rating sources & methodology MCAS scores from 2025 Data updated September 2026
280 Students
95.7% Attendance Rate
61.4 Composite Score
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MCAS score comparisons

Students meeting or exceeding expectations · 2025 results

Each subject shows the average of published grade percentages, without weighting by enrollment. The bars compare available years on a 0–100% scale. Grade coverage and student groups can change between years.

English Language Arts

76% Meeting or exceeding expectations

16% exceeding expectations

2023 82% 82%
2024 72.5% 72.5%
2025 76% 76%

Mathematics

79% Meeting or exceeding expectations

34% exceeding expectations

2023 85% 85%
2024 77% 77%
2025 79% 79%
View published results by year and grade
Available grade results for the latest 3 published years. An em dash means the value was not published.
YearSubjectGradeMeeting+Exceeding
2025English Language Arts03 76%16%
2025Mathematics03 79%34%
2024English Language Arts03 75%14%
2024English Language Arts04 70%19%
2024Mathematics03 75%36%
2024Mathematics04 79%22%
2023English Language Arts03 83%28%
2023English Language Arts04 81%15%
2023Mathematics03 84%33%
2023Mathematics04 86%27%

MCAS subject percentages differ from the composite school rating, which combines available academic and school indicators. Letter grades and state ranks compare schools at the same level. A rank change describes relative position, not a percentage-point change in test scores. Read the rating methodology.

Student Demographics

280 students enrolled

Race/Ethnicity

White 52.5%
Asian 29.3%
Multiracial 9.6%
Hispanic 5%
Black 3.6%

Gender

49.6% Male
50% Female

Student Programs

English Learners 20.4%
Special Education 12.9%
Free/Reduced Lunch 7.9%

School Performance

Key metrics and program information

Attendance

95.7% Attendance Rate
5.6% Chronic Absence

Staffing

Location

97 Waterhouse Road, BELMONT, MA

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A+-Rated School

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Frequently Asked Questions

What is Winn Brook School's grade rating?

Winn Brook School has earned a grade of A+, ranked #59 in Massachusetts, placing it in the top 7% of Massachusetts Elementary schools. This rating is based on 2025 MCAS test scores, attendance rates, and other performance metrics from the Massachusetts Department of Elementary and Secondary Education.

How many students attend Winn Brook School?

Approximately 280 students are enrolled at Winn Brook School.

How does Winn Brook School perform on MCAS tests?

Based on the most recent MCAS results, Winn Brook School's proficiency rates are: English Language Arts (76% proficient), Mathematics (79% proficient). MCAS (Massachusetts Comprehensive Assessment System) tests measure student achievement in English Language Arts, Mathematics, and Science.

What is the attendance rate at Winn Brook School?

Winn Brook School has an attendance rate of 95.7%. Strong attendance is correlated with better academic outcomes.

What school district is Winn Brook School part of?

Winn Brook School is part of Belmont School District. For enrollment information, contact the district office or visit the school's website. Enrollment typically requires proof of residency within the district boundaries.

How are Massachusetts school ratings calculated?

School ratings are calculated using multiple data points from the Massachusetts Department of Elementary and Secondary Education (DESE), including MCAS test scores (proficiency and growth), attendance rates, graduation rates (for high schools), and student-teacher ratios. Schools are ranked by percentile against similar schools statewide.