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Mark T. Sheehan High School

Public Grades 9-12

Summary

Mark T. Sheehan High School is a public high school located in Wallingford, Connecticut, serving 722 students in grades 9-12. The school is part of the Wallingford School District, which is ranked 100 out of 158 districts in the state and has a 2-star rating from SchoolDigger.

Academically, the school has shown a mixed performance compared to state and district averages. While its proficiency rates in SAT/English Language Arts (54.9%) and NGSS/Science (55.2%) were slightly above the state averages, its SAT/Math proficiency rate (25.1%) was below the state average. The school's performance on the NGSS/Science assessment has been relatively stronger, with proficiency rates consistently above the state average. Across different student subgroups, the school has performed well for Hispanic students and students from low socioeconomic backgrounds, but has struggled with the performance of its White student population.

Compared to nearby schools, Lyman Hall High School and Coginchaug Regional High School, Mark T. Sheehan High School has a more diverse student population, with a higher percentage of Hispanic students. However, the school has a lower percentage of African American students compared to North Haven High School and Crosby High School. Additionally, the school serves a relatively more affluent student population, with a lower percentage of free and reduced-price lunch recipients compared to nearby schools like Orville H. Platt High School and Crosby High School.

673

Students ?

11.0

Student/teacher ratio ?

$24,267

Per pupil spending ?

31.5%

Free/discounted lunch ?

142 Hope Hill Road
Wallingford, CT 06492

(203) 294-5900

District: Wallingford School District

Feeder schools for Mark T. Sheehan High School:

Elementary:	Cook Hill School
	Highland School
	Mary G. Fritz Elementary School of Yalesville
	Parker Farms School
Middle:	James H. Moran Middle School

Racial breakdown:

White:

64.9%

Hispanic:

21.5%

Asian:

6.4%

See top rated Connecticut public schools

Compare Mark T. Sheehan High School to nearby high schools!

At a glance

▬ Ranking trend: Holding steady — 53rd percentile in 2012 → 53rd in 2024

Strengths

✓94% graduate in 4 years — above the Connecticut average (89%)

✓Small classes — about 11 students per teacher

Students meeting standards (2024-2025) ?

This school46%

District avg56%

Connecticut avg48%

Not ranked this year

Mark T. Sheehan High School did not have enough recent test-score data to be ranked. Check the trend below for past years.

91^st of 156Wallingford School District among Connecticut 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

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2024	53.2	68 of 145	53.1%	★★★☆☆
2023	62.9	58 of 142	59.2%	★★★☆☆
2021	48.1	102 of 200	49.0%	★★☆☆☆
2019	68.3	50 of 121	58.7%	★★★☆☆
2018	63.1	57 of 121	52.9%	★★★☆☆
2017	63.2	57 of 140	59.3%	★★★☆☆
2016	69.6	47 of 132	64.4%	★★★☆☆
2015	67.6	64 of 196	67.3%	★★★☆☆
2013	70.2	75 of 193	61.1%	★★★☆☆
2012	67.4	89 of 188	52.7%	★★★☆☆
2011	70.3	82 of 189	56.6%	★★★☆☆
2010	71.7	62 of 186	66.7%	★★★☆☆
2009	72.3	56 of 176	68.2%	★★★☆☆
2008	68.1	73 of 176	58.5%	★★★☆☆
2007	70.8	61 of 176	65.3%	★★★☆☆

Disabled

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	61.5	15 of 57	73.7%	★★★★☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	47.6	57 of 104	45.2%	★★☆☆☆
2024	46.1	62 of 102	39.2%	★★☆☆☆
2022	65.9	44 of 106	58.5%	★★★☆☆
2021	39.4	107 of 189	43.4%	★★☆☆☆
2019	50.8	55 of 84	34.5%	★★☆☆☆

Hispanic

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2023	78.0	8 of 63	87.3%	★★★★☆
2021	78.0	24 of 104	76.9%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2024	62.9	25 of 65	61.5%	★★★☆☆
2022	84.6	6 of 63	90.5%	★★★★★
2021	57.2	61 of 155	60.6%	★★★☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	45.1	62 of 111	44.1%	★★☆☆☆
2024	33.0	67 of 100	33.0%	★★☆☆☆
2022	67.2	44 of 102	56.9%	★★★☆☆
2021	53.2	92 of 182	49.5%	★★★☆☆
2019	65.4	44 of 80	45.0%	★★☆☆☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	55.3	80 of 175	54.3%	★★★☆☆

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	27.8	89 of 116	23.3%	★☆☆☆☆
2024	24.8	94 of 116	19.0%	★☆☆☆☆
2022	59.0	47 of 117	59.8%	★★★☆☆
2021	21.4	130 of 155	16.1%	★☆☆☆☆
2019	42.3	80 of 113	29.2%	★★☆☆☆
2018	38.7	78 of 105	25.7%	★☆☆☆☆

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)

Hispanic (2023)87th percentile+28 vs school

Disabled (2021)74th percentile+25 vs school

Low Socio Economic Status (2024)62nd percentile+8 vs school

Special Education (2021)54th percentile+5 vs school

Female (2025)45th percentile

Male (2025)44th percentile

White (2025)23rd percentile

★

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Schools Near Mark T. Sheehan High School

School	Students/Teachers	Ranking (2025)	Ranking (2024)	NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (2025)	Per Pupil Expenditures (2025)
Mark T. Sheehan High School	Public	9-12	142 Hope Hill Road	Wallingford	06492	South Central Connecticut Planning Region	Wallingford School District	No	No	No	No	(203) 294-5900	673	61	11.0	31.5%	437 (64.9%)	16 (2.4%)	145 (21.5%)	43 (6.4%)	1 (0.1%)	1 (0.1%)	30 (4.5%)							(n/a)	45.9			$24,267
H. C. Wilcox Technical High School	Public	9-12	298 Oregon Rd.	Meriden	06450	South Central Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(203) 238-6260	753	64	11.7	45.6%	288 (38.2%)	45 (6.0%)	365 (48.5%)	8 (1.1%)	1 (0.1%)	0 (0.0%)	40 (5.3%)	16.5	115^th of 141 public high schools	18.4%	24.1	108^th of 145 public high schools	25.5%	7	27.7		7.6	$30,330
Orville H. Platt High School	Public	9-12	220 Coe Ave.	Meriden	06450	South Central Connecticut Planning Region	Meriden School District	No	No	No	No	(203) 235-7963	1,191	69	17.3	80.9%	211 (17.7%)	153 (12.8%)	764 (64.1%)	14 (1.2%)	2 (0.2%)	0 (0.0%)	44 (3.7%)	15.7	118^th of 141 public high schools	16.3%	20.1	113^th of 145 public high schools	22.1%	5	27.6	34.5	10.1	$16,382
Lyman Hall High School	Public	9-12	70 Pond Hill Road	Wallingford	06492	South Central Connecticut Planning Region	Wallingford School District	No	No	No	No	(203) 294-5350	936	89	10.4	35.8%	635 (67.8%)	29 (3.1%)	207 (22.1%)	38 (4.1%)	0 (0.0%)	2 (0.2%)	24 (2.6%)	65.4	49^th of 141 public high schools	65.2%	52.8	70^th of 145 public high schools	51.7%	21	63.4		29.5	$23,731
Cheshire High School	Public	9-12	525 South Main St.	Cheshire	06410	Naugatuck Valley Planning Region	Cheshire School District	No	No	No	No	(203) 250-2511	1,208	105	11.5	16.7%	873 (72.3%)	48 (4.0%)	111 (9.2%)	142 (11.8%)	3 (0.2%)	0 (0.0%)	31 (2.6%)							(n/a)	64.9			$23,807
Francis T. Maloney High School	Public	9-12	121 Gravel St.	Meriden	06450	South Central Connecticut Planning Region	Meriden School District	No	No	No	No	(203) 238-2334	1,291	80	16.2	73.5%	280 (21.7%)	157 (12.2%)	760 (58.9%)	39 (3.0%)	2 (0.2%)	0 (0.0%)	50 (3.9%)	30.3	88^th of 141 public high schools	37.6%	26	102^nd of 145 public high schools	29.7%	14	34.7	48.9	18.9	$16,765
REGIONS secure Hamden	Public	5-12	995 Sherman Avenue	Hamden	06514	South Central Connecticut Planning Region	Judicial Centers	No	(n/a)	No	(n/a)	(860) 566-2030	0	0			0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()							(n/a)
North Haven High School	Public	9-12	221 Elm Street	North Haven	06473	South Central Connecticut Planning Region	North Haven School District	No	No	No	Yes	(203) 239-1641	944	86	11.0	24.2%	627 (66.4%)	58 (6.1%)	143 (15.1%)	81 (8.6%)	0 (0.0%)	0 (0.0%)	33 (3.5%)	75.5	37^th of 141 public high schools	73.8%	73.7	40^th of 145 public high schools	72.4%	3	69.1	66.7	42.4	$22,326
Crosby High School	Public	9-12	300 Pierpont Rd.	Waterbury	06705	Naugatuck Valley Planning Region	Waterbury School District	No	No	No	Yes	(203) 574-8061	1,453	85	17.0	83.0%	90 (6.2%)	344 (23.7%)	942 (64.8%)	16 (1.1%)	12 (0.8%)	0 (0.0%)	49 (3.4%)	8.6	133^rd of 141 public high schools	5.7%	7.4	135^th of 145 public high schools	6.9%	2	9.6	27.4	9.4	$16,885
Coginchaug Regional High School	Public	9-12	135 Pickett Ln.	Durham	06422	Lower Connecticut River Valley Planning Region	Regional School District 13	No	No	No	Yes	(860) 349-7215	356	40	8.8	15.7%	298 (83.7%)	4 (1.1%)	37 (10.4%)	7 (2.0%)	0 (0.0%)	0 (0.0%)	10 (2.8%)							(n/a)				$33,510

Frequently Asked Questions about Mark T. Sheehan High School

How many students attend Mark T. Sheehan High School?

In the 2024-25 school year, 673 students attended Mark T. Sheehan High School.

What schools feed into Mark T. Sheehan High School?

Mark T. Sheehan High School is fed by the following schools:

Elementary : Cook Hill School
Elementary : Highland School
Elementary : Mary G. Fritz Elementary School of Yalesville
Elementary : Parker Farms School
Middle : James H. Moran Middle School

What is the racial makeup of Mark T. Sheehan High School?

Students at Mark T. Sheehan High School are 65% White, 22% Hispanic, 6% Asian, 4% Two or more races, 2% African American.

What district is Mark T. Sheehan High School in?

Wallingford School District

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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.

School													Students/Teachers											Ranking (2025)				Ranking (2024)				NGSS Science (2025)	SAT English Language Arts (2025)	SAT Math (2025)	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	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	NGSS Science 11th Grade	SAT English Language Arts 11th Grade	SAT Math 11th Grade	Total
Mark T. Sheehan High School	Public	9-12	142 Hope Hill Road	Wallingford	06492	South Central Connecticut Planning Region	Wallingford School District	No	No	No	No	(203) 294-5900	673	61	11.0	31.5%	437 (64.9%)	16 (2.4%)	145 (21.5%)	43 (6.4%)	1 (0.1%)	1 (0.1%)	30 (4.5%)								(n/a)	45.9			$24,267
H. C. Wilcox Technical High School	Public	9-12	298 Oregon Rd.	Meriden	06450	South Central Connecticut Planning Region	Connecticut Technical Education and Career System	No	No	No	No	(203) 238-6260	753	64	11.7	45.6%	288 (38.2%)	45 (6.0%)	365 (48.5%)	8 (1.1%)	1 (0.1%)	0 (0.0%)	40 (5.3%)	16.5	115^th of 141 public high schools	18.4%		24.1	108^th of 145 public high schools	25.5%	7	27.7		7.6	$30,330
Orville H. Platt High School	Public	9-12	220 Coe Ave.	Meriden	06450	South Central Connecticut Planning Region	Meriden School District	No	No	No	No	(203) 235-7963	1,191	69	17.3	80.9%	211 (17.7%)	153 (12.8%)	764 (64.1%)	14 (1.2%)	2 (0.2%)	0 (0.0%)	44 (3.7%)	15.7	118^th of 141 public high schools	16.3%		20.1	113^th of 145 public high schools	22.1%	5	27.6	34.5	10.1	$16,382
Lyman Hall High School	Public	9-12	70 Pond Hill Road	Wallingford	06492	South Central Connecticut Planning Region	Wallingford School District	No	No	No	No	(203) 294-5350	936	89	10.4	35.8%	635 (67.8%)	29 (3.1%)	207 (22.1%)	38 (4.1%)	0 (0.0%)	2 (0.2%)	24 (2.6%)	65.4	49^th of 141 public high schools	65.2%		52.8	70^th of 145 public high schools	51.7%	21	63.4		29.5	$23,731
Cheshire High School	Public	9-12	525 South Main St.	Cheshire	06410	Naugatuck Valley Planning Region	Cheshire School District	No	No	No	No	(203) 250-2511	1,208	105	11.5	16.7%	873 (72.3%)	48 (4.0%)	111 (9.2%)	142 (11.8%)	3 (0.2%)	0 (0.0%)	31 (2.6%)								(n/a)	64.9			$23,807
Francis T. Maloney High School	Public	9-12	121 Gravel St.	Meriden	06450	South Central Connecticut Planning Region	Meriden School District	No	No	No	No	(203) 238-2334	1,291	80	16.2	73.5%	280 (21.7%)	157 (12.2%)	760 (58.9%)	39 (3.0%)	2 (0.2%)	0 (0.0%)	50 (3.9%)	30.3	88^th of 141 public high schools	37.6%		26	102^nd of 145 public high schools	29.7%	14	34.7	48.9	18.9	$16,765
REGIONS secure Hamden	Public	5-12	995 Sherman Avenue	Hamden	06514	South Central Connecticut Planning Region	Judicial Centers	No	(n/a)	No	(n/a)	(860) 566-2030	0	0			0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)
North Haven High School	Public	9-12	221 Elm Street	North Haven	06473	South Central Connecticut Planning Region	North Haven School District	No	No	No	Yes	(203) 239-1641	944	86	11.0	24.2%	627 (66.4%)	58 (6.1%)	143 (15.1%)	81 (8.6%)	0 (0.0%)	0 (0.0%)	33 (3.5%)	75.5	37^th of 141 public high schools	73.8%		73.7	40^th of 145 public high schools	72.4%	3	69.1	66.7	42.4	$22,326
Crosby High School	Public	9-12	300 Pierpont Rd.	Waterbury	06705	Naugatuck Valley Planning Region	Waterbury School District	No	No	No	Yes	(203) 574-8061	1,453	85	17.0	83.0%	90 (6.2%)	344 (23.7%)	942 (64.8%)	16 (1.1%)	12 (0.8%)	0 (0.0%)	49 (3.4%)	8.6	133^rd of 141 public high schools	5.7%		7.4	135^th of 145 public high schools	6.9%	2	9.6	27.4	9.4	$16,885
Coginchaug Regional High School	Public	9-12	135 Pickett Ln.	Durham	06422	Lower Connecticut River Valley Planning Region	Regional School District 13	No	No	No	Yes	(860) 349-7215	356	40	8.8	15.7%	298 (83.7%)	4 (1.1%)	37 (10.4%)	7 (2.0%)	0 (0.0%)	0 (0.0%)	10 (2.8%)								(n/a)				$33,510