Ranks #28 of 895 Massachusetts elementary schools — top 4%.
Overall rank
#28
of 895 schools
ELA · 2024–2026
70%+28 vs MA
MA average 42%
Math · 2024–2026
81%+38 vs MA
MA average 43%
Avg class size
21
210 students
ELA and Math show the share of 3rd graders meeting or exceeding expectations on the MCAS, averaged over 2024–2026.
How it compares
What stands out
+Strongest area: Teacher quality, in the top 2% statewide. 100% of teachers are licensed and 93.8% are experienced.
↑Trend: Math is up 8 points since 2023 (75% to 83%).
↑Trend: ELA is up 6 points since 2023 (71% to 77%).
Where it stands among 895 Massachusetts elementary schools
Bottom of MATop of MA
Overall
Excellenttop 4% · #28
ELA
Excellenttop 7% · #61
Math
Excellenttop 3% · #18
Attendance
Excellenttop 10% · #86
Teacher quality
Excellenttop 2% · #13
MCAS standings use the 2024–2026 average of grade 3 results, so one unusual year doesn't swing a school's ranking. Scores in the sections below are from 2026.
Test scores
Both ELA and Math have been above the state average every year since 2018.
Share of 3rd graders meeting or exceeding expectations on the MCAS. There was no test in 2020.
English Language Arts77%in 2026 · state 43%
34 points above the state
Math83%in 2026 · state 42%
41 points above the state
Detailed scores
Average scaled score, ELA (500+ = meeting expectations)511
Average scaled score, Math (500+ = meeting expectations)517
Achievement percentile vs. MA schools (ELA · Math)93rd · 96th
Students & classrooms
Classrooms
Students210
Average class size21MA avg 18
Students per teacher13MA avg 12.1
Who attends
White
81.4%
Asian
7.6%
Hispanic/Latino
5.7%
Multi-Race
3.8%
Black/African American
1.4%
42.9% girls · 57.1% boys
Student needs
Low incomeLower than average
This school
7.1%
MA avg
42.8%
English learnersLower than average
This school
2.9%
MA avg
17.2%
Students with disabilitiesLower than average
This school
18.6%
MA avg
22.3%
Teachers
Licensed teachersAbout average
This school
100%
MA avg
98.4%
Experienced teachersBetter than average
This school
93.8%
MA avg
73.2%
Teaching in their fieldAbout average
This school
100%
MA avg
92.4%
Stayed from last yearWorse than average
This school
63%
MA avg
82.7%
More staffing details
Teachers (full-time equivalent)16.1
Principal retention100%
General education teachers78.9%
Special education teachers18.6%
English learner teachers2.5%
Attendance & safety
Attendance rateBetter than average
This school
95.7%
MA avg
94.1%
Chronically absentmissed 10%+ of daysBetter than average
This school
5.7%
MA avg
15.6%
7.8 days absent per student (MA avg 10.3) · Suspensions: Not reported
About the towns in Groton-Dunstable
Swallow/Union School is part of the Groton-Dunstable regional district. Our data doesn't list the school's own town, so here are all of the district's member towns.
Town figures are FY2026 averages for single-family homes from the Massachusetts Department of Revenue. Assessed values usually run below recent sale prices. "MA median" is the median of the state's 351 towns.