A Top 16%

Hosmer School

Grades PK-05 WATERTOWN, MA

Moved up 121 places from 2024 to 2025

#131 State Rank
A- District Grade
1 Concord Road, WATERTOWN, MA 02472
Diverse
Rating sources & methodology MCAS scores from 2025 Data updated September 2026
693 Students
95.4% Attendance Rate
57.5 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

49.7% Meeting or exceeding expectations

7.7% exceeding expectations

2023 54.3% 54.3%
2024 50.3% 50.3%
2025 49.7% 49.7%

Mathematics

50.7% Meeting or exceeding expectations

9.3% exceeding expectations

2023 56.7% 56.7%
2024 56% 56%
2025 50.7% 50.7%

Science

59% Meeting or exceeding expectations

14% exceeding expectations

2023 62% 62%
2024 59% 59%
2025 59% 59%
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 49%8%
2025English Language Arts04 47%4%
2025English Language Arts05 53%11%
2025Mathematics03 47%15%
2025Mathematics04 52%4%
2025Mathematics05 53%9%
2025Science05 59%14%
2024English Language Arts03 49%8%
2024English Language Arts04 51%6%
2024English Language Arts05 51%10%
2024Mathematics03 48%4%
2024Mathematics04 62%9%
2024Mathematics05 58%8%
2024Science05 59%13%
2023English Language Arts03 57%15%
2023English Language Arts04 47%13%
2023English Language Arts05 59%17%
2023Mathematics03 57%6%
2023Mathematics04 59%13%
2023Mathematics05 54%9%
2023Science05 62%22%

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

693 students enrolled

Race/Ethnicity

White 54.3%
Hispanic 21.1%
Multiracial 11.5%
Asian 8.8%
Black 4.2%

Gender

55.4% Male
44.4% Female

Student Programs

English Learners 20.2%
Special Education 19.5%
Free/Reduced Lunch 31%

School Performance

Key metrics and program information

Attendance

95.4% Attendance Rate
7.6% Chronic Absence

Staffing

Location

1 Concord Road, WATERTOWN, MA

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A-Rated School

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Frequently Asked Questions

What is Hosmer School's grade rating?

Hosmer School has earned a grade of A, ranked #131 in Massachusetts, placing it in the top 16% 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 Hosmer School?

Approximately 693 students are enrolled at Hosmer School.

How does Hosmer School perform on MCAS tests?

Based on the most recent MCAS results, Hosmer School's proficiency rates are: English Language Arts (50% proficient), Mathematics (51% proficient), Science (59% proficient). MCAS (Massachusetts Comprehensive Assessment System) tests measure student achievement in English Language Arts, Mathematics, and Science.

What is the attendance rate at Hosmer School?

Hosmer School has an attendance rate of 95.4%. Strong attendance is correlated with better academic outcomes.

What school district is Hosmer School part of?

Hosmer School is part of Watertown 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.