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Joseph Demello

Public Grades K-5
252nd
SchoolDigger Rank ?
of 899 Massachusetts Elementary Schools
Better than 72% of Massachusetts elementary schools
Summary

Joseph Demello is a K–5 elementary school in South Dartmouth, MA, part of the Dartmouth Public Schools district, serving 392 students in a coastal area near New Bedford. In 2025–2026, it ranked 252 of 899 Massachusetts elementary schools, placing it in the 72nd percentile with 4 stars; the Dartmouth district overall ranked 153 of 351 districts (56th percentile, 3 stars). That means Joseph Demello is performing above its district’s average statewide standing. The school has been a 4-star school for four consecutive reported years, from 2022–2023 through 2025–2026, after reaching only the 51st percentile in 2017–2018.

In 2025–2026, Joseph Demello’s proficiency rates were above both the district and state averages in all three tested subjects: English language arts 50.53%, mathematics 57.89%, and science 47.54%. Mathematics is the clearest strength: 3rd grade math was 63.79% and 4th grade math was 67.14%, while 5th grade math was 41.94%, much closer to the state average. Compared with the nearest same-district school, James M. Quinn School, Demello outperformed in every 2025–2026 grade/subject comparison, including an all-grade math gap of +20.90 points and a 3rd grade math gap of nearly 43 points (63.79% vs. 20.80%). Among nearby New Bedford schools, most are much lower-performing, though William H Taylor is a close peer in all-grade ELA and math, and James B Congdon is stronger in science and 5th grade. Demello remains the highest-ranked nearby school by percentile.

Subgroup results show notable effectiveness: low socio-economic status students ranked 9 of 742, in the 99th percentile with 5 stars in 2025–2026, up from the 85th percentile in 2024–2025. Special education students ranked in the 86th percentile. Parents should note a few relative watch points: 5th grade math is closer to the state average, and science fell from 64.29% in 2024–2025 to 47.54% in 2025–2026, though it remains above district and state averages. The school also had the highest student–teacher ratio (14.7) among the nearby schools and comparatively low per-student spending ($14,984 in 2020–2021), yet posted strong outcomes; the data do not establish causation, and economic composition could not be fully analyzed from the available free/reduced-lunch field.

392
Students ?
14.7
Student/teacher ratio ?
$19,041
Per pupil spending ?
23.6%
Free/discounted lunch ?
 654 Dartmouth Street
       South Dartmouth, MA  02748

(508) 996-6750

District: Dartmouth


Students who attend Joseph Demello usually attend:

Middle:    Dartmouth Middle
High:    Dartmouth High
Racial breakdown:

White:
80.4%
Hispanic:
8.9%
Two or more races:
6.9%
more
 See top rated Massachusetts elementary schools

 Compare Joseph Demello to nearby elementary schools!
At a glance
▼ Ranking trend: Declining — 82nd percentile in 2016 → 72nd in 2026
Strengths
✓Test scores above the Massachusetts average (53% vs 41% meeting standards)
✓Above the Massachusetts median (72nd percentile)
Worth a look
!Ranking has slipped — down 10 percentile points since 2016
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2025-2026) ?
This school53%
District avg47%
Massachusetts avg41%
252nd of 899
Massachusetts public elementary schools ?
Top 28%▼ down 10 pts since 2016
From top 18% (2016) to top 28% (2026)
See the entire ranking list of Massachusetts Elementary Schools →
★★★★★
SchoolDigger rating ?
1st of 3Elementary Schools in the Dartmouth
153rd of 351Dartmouth among Massachusetts districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankMassachusetts percentileRating
202671.5252 of 89972.0%★★★★☆
202574.0238 of 90673.7%★★★★☆
202470.3276 of 91669.9%★★★★☆
202370.8279 of 92869.9%★★★★☆
202255.3430 of 93253.9%★★★☆☆
202168.5291 of 93668.9%★★★☆☆
201960.2382 of 94259.4%★★★☆☆
201854.9457 of 93451.1%★★★☆☆
201767.4302 of 93867.8%★★★☆☆
201680.2165 of 93282.3%★★★★☆
201587.074 of 91491.9%★★★★★
201478.0186 of 92679.9%★★★★☆
201372.9264 of 92871.6%★★★★☆
201267.2342 of 93063.2%★★★☆☆
201171.7287 of 92468.9%★★★☆☆
201057.6417 of 92054.7%★★★☆☆
200952.7476 of 90947.6%★★☆☆☆
200845.6548 of 90839.6%★★☆☆☆
200744.6565 of 91138.0%★★☆☆☆
200651.4478 of 91147.5%★★☆☆☆
200548.5491 of 88744.6%★★☆☆☆
200450.7477 of 88245.9%★★☆☆☆
200345.4524 of 88440.7%★★☆☆☆

Disabled

YearAvg scoreStatewide rankMassachusetts percentileRating
202276.0100 of 67285.1%★★★★☆
202176.797 of 63284.7%★★★★☆
201962.3191 of 66571.3%★★★★☆
201852.1255 of 65661.1%★★★☆☆

Female

YearAvg scoreStatewide rankMassachusetts percentileRating
202674.5213 of 86975.5%★★★★☆
202571.8241 of 86972.3%★★★★☆
202474.1226 of 88674.5%★★★★☆
202372.8241 of 88772.8%★★★★☆
202260.5354 of 90160.7%★★★☆☆
202171.4245 of 89872.7%★★★★☆
201961.3355 of 90260.6%★★★☆☆
201859.2382 of 89357.2%★★★☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankMassachusetts percentileRating
202695.99 of 74298.8%★★★★★
202574.1110 of 73685.1%★★★★☆
202472.7129 of 76083.0%★★★★☆
202379.677 of 75789.8%★★★★☆
202270.1167 of 77278.4%★★★★☆
202180.757 of 70591.9%★★★★★
201958.8249 of 70064.4%★★★☆☆
201845.5377 of 68545.0%★★☆☆☆

Male

YearAvg scoreStatewide rankMassachusetts percentileRating
202664.4301 of 87965.8%★★★☆☆
202572.7243 of 88472.5%★★★★☆
202463.8311 of 89165.1%★★★☆☆
202366.3304 of 89666.1%★★★☆☆
202249.6463 of 90849.0%★★☆☆☆
202163.8330 of 90463.5%★★★☆☆
201955.4416 of 90754.1%★★★☆☆
201849.3476 of 89847.0%★★☆☆☆

Military Connected

YearAvg scoreStatewide rankMassachusetts percentileRating
202239.93 of 30.0%★★★★☆

Special Education

YearAvg scoreStatewide rankMassachusetts percentileRating
202676.599 of 70986.0%★★★★☆
202579.290 of 71787.4%★★★★☆
202466.8175 of 73176.1%★★★★☆
202367.6170 of 70375.8%★★★★☆
202265.2245 of 90572.9%★★★★☆
202173.0161 of 89482.0%★★★★☆
201949.3447 of 89650.1%★★★☆☆
201833.6652 of 88626.4%★☆☆☆☆

Tested In Person

YearAvg scoreStatewide rankMassachusetts percentileRating
202166.6316 of 92565.8%★★★☆☆

White

YearAvg scoreStatewide rankMassachusetts percentileRating
202658.0307 of 73458.2%★★★☆☆
202561.4282 of 73761.7%★★★☆☆
202456.0333 of 75355.8%★★★☆☆
202355.3337 of 76255.8%★★★☆☆
202240.5485 of 76436.5%★★☆☆☆
202154.6336 of 76556.1%★★★☆☆
201946.8447 of 78042.7%★★☆☆☆
201845.5466 of 77239.6%★★☆☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Low Socio Economic Status (2026)99th percentile+27 vs school
Special Education (2026)86th percentile+14 vs school
Disabled (2022)85th percentile+31 vs school
Female (2026)75th percentile+4 vs school
Tested In Person (2021)66th percentile-3 vs school
Male (2026)66th percentile-6 vs school
White (2026)58th percentile-14 vs school
Military Connected (2022)<1st percentile-54 vs school
By subject vs Massachusetts (2025-2026) ?
Mathematics58%+17 vs state
English Language Arts51%+10 vs state
Science48%+7 vs state

★
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Frequently Asked Questions about Joseph Demello

Students at Joseph Demello are 80% White, 9% Hispanic, 7% Two or more races, 2% African American, 1% Asian.

Students who attend Joseph Demello usually go on to attend:

Middle : Dartmouth Middle
High : Dartmouth High

Joseph Demello ranks 252nd of 899 Massachusetts elementary schools. SchoolDigger rates this school 4 stars out of 5.

In the 2024-25 school year, 392 students attended Joseph Demello.

Rate Joseph Demello!



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Latest Massachusetts data All new data »
2024–25 dropout rates & graduation ratesMar 5, 2026
2024–25 MCAS Next Generation test scoresSep 29, 2025
2023–24 school spending dataMay 8, 2025
2023–24 dropout rates & graduation ratesMay 1, 2025


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Massachusetts Department of Elementary and Secondary Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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