Serving 344 students in grades Kindergarten-5, Robert J. O'brien School ranks in the bottom 50% of all schools in Connecticut for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 20-24% (which is lower than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 25-29% (which is lower than the Connecticut state average of 50%).
The student-teacher ratio of 14:1 is higher than the Connecticut state level of 12:1.
Minority enrollment is 96% of the student body (majority Hispanic), which is higher than the Connecticut state average of 54% (majority Hispanic and Black).
Quick Facts (2026)
- Grades: Kindergarten-5
- Enrollment: 344 students
- Student-Teacher Ratio: 14:1
- Minority Enrollment: 96%
- Overall Testing Rank: Bottom 50% in CT
- Math Proficiency: 20-24% (Btm 50%)
- Reading Proficiency: 25-29% (Btm 50%)
- Science Proficiency: 25-29% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Overview
Robert J. O'brien School's student population of 344 students has declined by 6% over five school years.
The teacher population of 25 teachers has declined by 7% over five school years.
Grades Offered
Grades Kindergarten-5
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
344 students
Total Classroom Teachers
25 teachers
Year Founded
2025
School Calendar
School Rankings
Robert J. O'brien School ranks within the bottom 50% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Robert J. O'brien School is 0.52, 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
#745 out of 939 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
20-24%
41%
Reading/Language Arts Test Scores (% Proficient)
25-29%
50%
Science Test Scores (% Proficient)
25-29%
47%
Student-Teacher Ratio
14:1
12:1
American Indian
n/a
n/a
Asian
2%
5%
Hispanic
61%
32%
Black
33%
12%
White
4%
46%
Hawaiian
n/a
n/a
Two or more races
n/a
5%
All Ethnic Groups
Chronically Absent Students
(22-23)24.1%
19.3%
Eligible for Free Lunch
59%
38%
Eligible for Reduced Lunch
9%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Notes
- School Mascot: O'brien Lions
Frequently Asked Questions
What is Robert J. O'brien School's ranking?
Robert J. O'brien School is ranked #745 out of 939 schools, which ranks it among the bottom 50% of public schools in Connecticut.
What percent of students have achieved state testing proficiency in math and reading?
20-24% of students have achieved math proficiency (compared to the 41% CT state average), while 25-29% of students have achieved reading proficiency (compared to the 50% CT state average).
How many students attend Robert J. O'brien School?
344 students attend Robert J. O'brien School.
What is the racial composition of the student body?
61% of Robert J. O'brien School students are Hispanic, 33% of students are Black, 4% of students are White, and 2% of students are Asian.
What is the student-teacher ratio of Robert J. O'brien School?
Robert J. O'brien School has a student ration of 14:1, which is higher than the Connecticut state average of 12:1.
What grades does Robert J. O'brien School offer ?
Robert J. O'brien School offers enrollment in grades Kindergarten-5 (Supplemental Virtual).
What school district is Robert J. O'brien School part of?
Robert J. O'brien School is part of East Hartford School District.
School Reviews
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