Serving 345 students in grades Prekindergarten-4, Mary R. Tisko 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 55-59% (which is higher than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 55-59% (which is higher than the Connecticut state average of 50%).
The student-teacher ratio of 12:1 is equal to the Connecticut state level of 12:1.
Minority enrollment is 19% of the student body (majority Hispanic), which is lower than the Connecticut state average of 53% (majority Hispanic).
Quick Facts (2026)
- Grades: Prekindergarten-4
- Enrollment: 345 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 19%
- Overall Testing Rank: Top 50% in CT
- Math Proficiency: 55-59% (Top 30%)
- Reading Proficiency: 55-59% (Top 50%)
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Overview
Mary R. Tisko School's student population of 345 students has stayed relatively flat over five school years.
The teacher population of 30 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Prekindergarten-4
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
345 students
Gender %
Total Classroom Teachers
30 teachers
School Calendar
School Rankings
Mary R. Tisko 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 Mary R. Tisko School is 0.33, 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
#347 out of 939 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
55-59%
41%
Reading/Language Arts Test Scores (% Proficient)
55-59%
50%
Student-Teacher Ratio
12:1
12:1
American Indian
n/a
n/a
Asian
1%
5%
Hispanic
12%
31%
Black
1%
12%
White
81%
47%
Hawaiian
n/a
n/a
Two or more races
5%
5%
All Ethnic Groups
Eligible for Free Lunch
17%
37%
Eligible for Reduced Lunch
3%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
Frequently Asked Questions
What is Mary R. Tisko School's ranking?
Mary R. Tisko School is ranked #347 out of 939 schools, which ranks it among the top 50% of public schools in Connecticut.
What schools are Mary R. Tisko School often compared to?
Mary R. Tisko Schoolis often viewed alongside schools like Mary T. Murphy School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
55-59% of students have achieved math proficiency (compared to the 41% CT state average), while 55-59% of students have achieved reading proficiency (compared to the 50% CT state average).
How many students attend Mary R. Tisko School?
345 students attend Mary R. Tisko School.
What is the racial composition of the student body?
81% of Mary R. Tisko School students are White, 12% of students are Hispanic, 5% of students are Two or more races, 1% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Mary R. Tisko School?
Mary R. Tisko School has a student ration of 12:1, which is equal to the Connecticut state average of 12:1.
What grades does Mary R. Tisko School offer ?
Mary R. Tisko School offers enrollment in grades Prekindergarten-4 (Supplemental Virtual).
What school district is Mary R. Tisko School part of?
Mary R. Tisko School is part of Branford School District.
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