A- Top 24%

Swallow/Union School

Grades K-04 DUNSTABLE, MA

Moved down 188 places from 2024 to 2025

#199 State Rank
A District Grade
522 Main Street, DUNSTABLE, MA 01827
High Attendance 96.2%
Rating sources & methodology MCAS scores from 2025 Data updated September 2026
205 Students
96.2% Attendance Rate
54.9 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

64.5% Meeting or exceeding expectations

8% exceeding expectations

2023 74% 74%
2024 74% 74%
2025 64.5% 64.5%

Mathematics

77.5% Meeting or exceeding expectations

23.5% exceeding expectations

2023 78.5% 78.5%
2024 81% 81%
2025 77.5% 77.5%
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 54%13%
2025English Language Arts04 75%3%
2025Mathematics03 67%22%
2025Mathematics04 88%25%
2024English Language Arts03 79%21%
2024English Language Arts04 69%11%
2024Mathematics03 93%33%
2024Mathematics04 69%17%
2023English Language Arts03 71%18%
2023English Language Arts04 77%6%
2023Mathematics03 75%24%
2023Mathematics04 82%12%

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

205 students enrolled

Race/Ethnicity

White 82%
Asian 7.8%
Hispanic 5.9%
Multiracial 3.9%
Black 0.5%

Gender

55.1% Male
44.9% Female

Student Programs

English Learners 2%
Special Education 13.7%
Free/Reduced Lunch 5.9%

School Performance

Key metrics and program information

Attendance

96.2% Attendance Rate
3.4% Chronic Absence

Staffing

Location

522 Main Street, DUNSTABLE, MA

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A--Rated School

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Part of Groton-Dunstable School District

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Frequently Asked Questions

What is Swallow/Union School's grade rating?

Swallow/Union School has earned a grade of A-, ranked #199 in Massachusetts, placing it in the top 24% 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 Swallow/Union School?

Approximately 205 students are enrolled at Swallow/Union School.

How does Swallow/Union School perform on MCAS tests?

Based on the most recent MCAS results, Swallow/Union School's proficiency rates are: English Language Arts (64% proficient), Mathematics (78% proficient). MCAS (Massachusetts Comprehensive Assessment System) tests measure student achievement in English Language Arts, Mathematics, and Science.

What is the attendance rate at Swallow/Union School?

Swallow/Union School has an attendance rate of 96.2%. Strong attendance is correlated with better academic outcomes.

What school district is Swallow/Union School part of?

Swallow/Union School is part of Groton-Dunstable 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.