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Best Public Schools in Zip Code 06239

New rankings! SchoolDigger recently updated its Connecticut rankings with newly released test scores for the 2025-26 school year.

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At a glance

Schools

1,279

Students

Districts

Top rankedKillingly Memorial School282^nd of 492 Connecticut elementary schools

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Biggest riser

Killingly Memorial School up 8 spots statewide this year

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Newly ranked this year

H. H. Ellis Technical High School

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Summary:

Zip code 06239 (Danielson, CT) is served by 3 schools: 1 elementary school and 2 high schools, enrolling a combined 1,279 students. Killingly Memorial School (Grades 2–4) is the area's only elementary school and serves 485 students, while H. H. Ellis Technical High School (650 students) and Quinebaug Middle College (144 students) serve Grades 9–12. All three schools maintain low student-teacher ratios between 11.0 and 12.2, and each serves a notable percentage of students eligible for free or reduced lunch, with Killingly Memorial having the highest poverty rate at 55.46%.

Each school has a distinct strength. H. H. Ellis Technical High School posts a remarkable 98.1% graduation rate — above the state's 91.2% and the Connecticut Technical Education and Career System's 97.8% — and science proficiency of 51.6%, slightly above the state average. However, only 11.8% of its 11th graders are proficient in SAT math, a major concern. Killingly Memorial School stands out for attendance: its 12.8% chronic absenteeism rate is far better than the Killingly School District's 23.0% and the state's 16.4%, despite serving the highest-poverty population in the area. Its math scores are essentially at state levels. Quinebaug Middle College, the smallest school, is the math leader, with 37.0% SAT math proficiency exceeding both its district (25.8%) and the state (31.3%).

The area shows a clear pattern: elementary math is solid, but high school math proficiency drops sharply — H. H. Ellis's SAT math is nearly 20 points below the state average, even though its students graduate at very high rates. Quinebaug Middle College's higher per-student spending ($15,691 vs. $14,873 at Killingly Memorial) may support its stronger high school math outcomes. Quinebaug is part of the Eastern Connecticut Regional Educational Service Center (EAS). With low student-teacher ratios and above-average resources, these schools have a strong foundation. The biggest opportunity for improvement in zip code 06239 is high school math achievement.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				NGSS Science (2026)	SAT English Language Arts (2026)	SAT Math (2026)	SBAC English Language Arts (2026)		SBAC Mathematics (2026)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients (2025)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	NGSS Science 11th Grade	SAT English Language Arts 11th Grade	SAT Math 11th Grade	SBAC English Language Arts 3rd Grade	SBAC English Language Arts 4th Grade	SBAC Mathematics 3rd Grade	SBAC Mathematics 4th Grade	Total
H. H. Ellis Technical High School	Public	9-12	613 Upper Maple St.	Danielson	06239	Northeastern Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(860) 412-7500	650	56	11.6	37.8%	528 (81.2%)	2 (0.3%)	88 (13.5%)	6 (0.9%)	3 (0.5%)	0 (0.0%)	20 (3.1%)	33.6	78^th of 135 public high schools	42.2%					(n/a)	51.6	42.8	11.8					$30,060
Quinebaug Middle College	Public, Magnet	9-12	742 Upper Maple St.	Danielson	06239	Northeastern Connecticut Planning Region	Eastern Connecticut Regional Educational Service Center (EAS	No	Yes	No	Yes	(860) 932-4100	144	13	11.0	38.2%	106 (73.6%)	6 (4.2%)	23 (16.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	8 (5.6%)								(n/a)	1102.0		37.0					$29,910
Killingly Memorial School	Public	2-4	339 Main St.	Danielson	06239	Northeastern Connecticut Planning Region	Killingly School District	No	No	No	Yes	(860) 779-6680	485	40	12.2	55.5%	368 (75.9%)	6 (1.2%)	67 (13.8%)	11 (2.3%)	0 (0.0%)	0 (0.0%)	33 (6.8%)	41.5	282^nd of 492 public elementary schools	42.7%		38	290^th of 493 public elementary schools	41.2%	8				41.3	45.6	51.3	51.1	$18,587

Cities Near Zip Code 06239

City	Distance	# of Schools	Statewide Rank
Danielson	1.85 mi	3	145^th
Brooklyn	4.12 mi	2	124^th
Dayville	4.3 mi	3	139^th
Plainfield	4.71 mi	3	138^th
Central Village	4.83 mi	1	165^th

See the top CT Connecticut cities

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