What grades does Mark T. Sheehan High School serve?

Mark T. Sheehan High School operates as a High school within the local district. The school serves families in the Wallingford area.

Where is Mark T. Sheehan High School located?

Mark T. Sheehan High School is a urban school in Wallingford, CT.

What is the student-teacher ratio at Mark T. Sheehan High School?

The student-teacher ratio at Mark T. Sheehan High School is 11.5:1. Lower ratios generally indicate smaller class sizes.

What schools are in Wallingford, CT?

Schools in Wallingford include Mark T. Sheehan High School and others operated by the local district. The district serves families throughout the Wallingford area.

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Mark T. Sheehan High School — School Calendar 2026-27

High|Wallingford, Connecticut|Wallingford School District

Wallingford, CT 06492

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Board of Education MeetingEvent

Board of Education Meeting at 4 Fairfield Blvd, Wallingford, CT 06492

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School Profile

Grades

9–12

Enrollment

724

Student:Teacher

11.5:1

Locale

Suburban

District

Wallingford School District

Econ. Disadvantaged

30.1%

Phone

(203)294-5900

School Statistics

Academics (SY 2020-21)

ELA Proficiency

53%

53th percentile in CT

Math Proficiency

28%

39th percentile in CT

Graduation Rate

>=95%

Chronic Absenteeism

5.9%

SY 2019-20

Programs & Activities (SY 2021-22)

AP Program

24 courses offered

160 students enrolled

Gifted & Talented

55 students enrolled

Dual Enrollment

98 students enrolled

SAT/ACT

163 test takers

Athletics

22 sports, 35 teams

539 participants

Student-Teacher Ratio: 9.1:1

Better than average in CT

Technology & Internet Access (SY 2021-22)

Wi-Fi

Campus-wide wireless

Fiber Internet

High-speed connection

771

Connected devices

Staff & Support Services (SY 2021-22)

Teachers (FTE)

74.25

100% fully certified

Counselors

Psychologists

Social Workers

Nurses

Security Staff

Anti-Bullying Policy

District Finance (FY 2023)

Per-Pupil Spending

$26,268

Total current expenditure

Instruction Spending

$15,932

Per pupil, classroom only

Total Revenue/Pupil

$29,079

All funding sources

Funding Sources

Federal 5%State 30%Local 65%

District-level data from NCES F-33 Survey

Community Context

Median Home Value

$656,749

+4.9% 1yr+43.0% 5yr

Bridgeport, CT metro area

Community Need Level

Moderate

CDC/ATSDR Social Vulnerability Index 2022

Neighborhood Indicators (Census Tract)

18.3%

Below 150% poverty line

6.3%

Unemployment rate

5.1%

Uninsured residents

8.9%

No HS diploma (25+)

Special Education (IDEA)

District-level data from IDEA Part B · Students ages 3-21 served under IDEA

Total Students Served

1,001

Ages 3-21 under IDEA

School-Age (6-21)

918

Receiving special ed services

Est. % of Enrollment

100%

District rate, school may vary

Disability Categories (District)

Specific Learning Disability

311 (34%)

Other Health Impairment

217 (24%)

Autism

160 (17%)

Speech/Language Impairment

114 (12%)

Emotional Disturbance

37 (4%)

Intellectual Disability

25 (3%)

Source: U.S. Department of Education, IDEA Section 618 Data · District-level counts · Individual school figures may differ

Enrollment Trend (2014-2025)

673

Current enrollment

Declining(-13% 5yr)

Coming Up

Mon, Jul 27, 2026

Board of Education Meeting

Event

Frequently Asked Questions about Mark T. Sheehan High School

Mark T. Sheehan High School has a total enrollment of 724 students and serves grades High. The school is part of the local school district in Wallingford, CT.