Serving 252 students in grades Prekindergarten-4, John B. Sliney School ranks in the top 50% of all schools in Connecticut for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 60-64% (which is higher than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is approximately equal to the Connecticut state average of 50%).
The student-teacher ratio of 9:1 is lower than the Connecticut state level of 12:1.
Minority enrollment is 36% of the student body (majority Hispanic), which is lower than the Connecticut state average of 54% (majority Hispanic).
Quick Facts (26-27)
- Grades: Prekindergarten-4
- Enrollment: 252 students
- Student-Teacher Ratio: 9:1
- Minority Enrollment: 36%
- Overall Testing Rank: Top 50% in CT
- Math Proficiency: 60-64% (Top 30%)
- Reading Proficiency: 50-54% (Top 50%)
- Attendance Zone: John B. Sliney School serves the southwest part of Branford, CT, covering an area of approximately 3.7 square miles. Families within this zone can typically expect a drive of 5 to 10 minutes to reach the school, with an average distance of 1.6 miles from the school to the edge of the zone, extending up to 3.5 miles at its furthest point.
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Overview
John B. Sliney School's student population of 252 students has stayed relatively flat over five school years.
The teacher population of 28 teachers has grown by 16% over five school years.
Grades Offered
Grades Prekindergarten-4
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
252 students
Showing 2015–2025. View full 39-year historical data
Total Classroom Teachers
28 teachers
Showing 2015–2025. View full 39-year historical data
Year Founded
1929
School Calendar
Average Class Size
19 students
School Rankings
John B. Sliney School ranks within the top 50% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of John B. Sliney School is 0.54, which is less than the diversity score at state average of 0.68. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#355 out of 939 schools
(Top 50%)
(Top 50%)
Showing 2012–2023. View full 14-year historical data
Math Test Scores (% Proficient)
60-64%
41%
Showing 2012–2023. View full 14-year historical data
Reading/Language Arts Test Scores (% Proficient)
50-54%
50%
Showing 2011–2022. View full 13-year historical data
Student-Teacher Ratio
9:1
12:1
Showing 2015–2025. View full 39-year historical data
Asian
3%
5%
Showing 2015–2025. View full 38-year historical data
Hispanic
21%
32%
Showing 2015–2025. View full 36-year historical data
Black
4%
12%
Showing 2015–2025. View full 38-year historical data
White
64%
46%
Showing 2015–2025. View full 38-year historical data
Two or more races
8%
5%
Showing 2015–2025. View full 15-year historical data
All Ethnic Groups
Showing 2015–2025. View full 38-year historical data
Chronically Absent Students
(22-23)13.9%
19.3%
Eligible for Free Lunch
39%
38%
Showing 2015–2025. View full 34-year historical data
Eligible for Reduced Lunch
8%
6%
Showing 2015–2025. View full 27-year historical data
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
Profile last updated: 10/10/2026
Frequently Asked Questions
What is John B. Sliney School's ranking?
John B. Sliney School is ranked #355 out of 939 schools, which ranks it among the top 50% of public schools in Connecticut.
What schools are John B. Sliney School often compared to?
John B. Sliney Schoolis often viewed alongside schools like Mary R. Tisko School, Mary T. Murphy School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
60-64% of students have achieved math proficiency (compared to the 41% CT state average), while 50-54% of students have achieved reading proficiency (compared to the 50% CT state average).
How many students attend John B. Sliney School?
252 students attend John B. Sliney School.
What is the racial composition of the student body?
64% of John B. Sliney School students are White, 21% of students are Hispanic, 8% of students are Two or more races, 4% of students are Black, and 3% of students are Asian.
What is the student-teacher ratio of John B. Sliney School?
John B. Sliney School has a student ration of 9:1, which is lower than the Connecticut state average of 12:1.
What grades does John B. Sliney School offer ?
John B. Sliney School offers enrollment in grades Prekindergarten-4 (Supplemental Virtual).
What school district is John B. Sliney School part of?
John B. Sliney School is part of Branford School District.
In what neighborhood is John B. Sliney School located?
John B. Sliney School is located in the Branford Center neighborhood of Branford, CT. There are 1 other public schools located in Branford Center.
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