Serving 339 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 12:1 is equal to 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 53% (majority Hispanic and Black).
Quick Facts (2025-26)
- Grades: Kindergarten-5
- Enrollment: 339 students
- Student-Teacher Ratio: 12:1
- 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
Top Rankings
Robert J. O'brien School ranks among the top 20% of public schools in Connecticut for:
Category
Attribute
Percent Eligible For Free Lunch
School Overview
Robert J. O'brien School's student population of 339 students has declined by 12% over five school years.
The teacher population of 28 teachers has declined by 6% over five school years.
Grades Offered
Grades Kindergarten-5
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
339 students
Gender %
Total Classroom Teachers
28 teachers
Year Founded
2025
School Calendar
School Mascot
O'brien Lions
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 0.55, 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
12:1
12:1
American Indian
n/a
n/a
Asian
3%
5%
Hispanic
59%
31%
Black
32%
12%
White
4%
47%
Hawaiian
n/a
n/a
Two or more races
2%
5%
All Ethnic Groups
Eligible for Free Lunch
59%
37%
Eligible for Reduced Lunch
7%
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
Profile last updated: 02/09/2025
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?
339 students attend Robert J. O'brien School.
What is the racial composition of the student body?
59% of Robert J. O'brien School students are Hispanic, 32% of students are Black, 4% of students are White, 3% of students are Asian, and 2% of students are Two or more races.
What is the student-teacher ratio of Robert J. O'brien School?
Robert J. O'brien School has a student ration of 12:1, which is equal to 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.
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