Serving 395 students in grades Prekindergarten-5, Costello Elementary School ranks in the top 10% of all schools in Michigan for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 61% (which is higher than the Michigan state average of 35%). The percentage of students achieving proficiency in reading/language arts is 72% (which is higher than the Michigan state average of 45%).
The student-teacher ratio of 16:1 is equal to the Michigan state level of 16:1.
Minority enrollment is 45% of the student body (majority Asian), which is higher than the Michigan state average of 37% (majority Black and Hispanic).
Quick Facts (2026)
- Grades: Prekindergarten-5
- Enrollment: 395 students
- Student-Teacher Ratio: 16:1
- Minority Enrollment: 45%
- Overall Testing Rank: Top 10% in MI
- Math Proficiency: 61% (Top 10%)
- Reading Proficiency: 72% (Top 10%)
- Science Proficiency: 65-69% (Top 5%)
- Source: National Center for Education Statistics (NCES), MI Dept. of Education
Top Rankings
Costello Elementary School ranks among the top 20% of public schools in Michigan for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Costello Elementary School's student population of 395 students has stayed relatively flat over five school years.
The teacher population of 24 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Prekindergarten-5
(No virtual instruction)
(No virtual instruction)
Total Students
395 students
Total Classroom Teachers
24 teachers
Year Founded
1972
School Calendar
School Rankings
Costello Elementary School ranks within the top 10% of all 3,025 schools in Michigan (based off of combined math and reading proficiency testing data).
The diversity score of Costello Elementary School is 0.60, which is more than the diversity score at state average of 0.57. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#190 out of 3025 schools
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
61%
35%
Reading/Language Arts Test Scores (% Proficient)
72%
45%
Science Test Scores (% Proficient)
65-69%
38%
Student-Teacher Ratio
16:1
16:1
American Indian
n/a
1%
Asian
31%
4%
Hispanic
6%
9%
Black
2%
18%
White
55%
63%
Hawaiian
n/a
n/a
Two or more races
6%
5%
All Ethnic Groups
Chronically Absent Students
(22-23)14.2%
33.3%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
8%
45%
Eligible for Reduced Lunch
3%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MI Dept. of Education
School Notes
- School Mascot: Cardinals
Frequently Asked Questions
What is Costello Elementary School's ranking?
Costello Elementary School is ranked #190 out of 3,025 schools, which ranks it among the top 10% of public schools in Michigan.
What schools are Costello Elementary School often compared to?
Costello Elementary Schoolis often viewed alongside schools like Hamilton Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
61% of students have achieved math proficiency (compared to the 35% MI state average), while 72% of students have achieved reading proficiency (compared to the 45% MI state average).
How many students attend Costello Elementary School?
395 students attend Costello Elementary School.
What is the racial composition of the student body?
55% of Costello Elementary School students are White, 31% of students are Asian, 6% of students are Hispanic, 6% of students are Two or more races, and 2% of students are Black.
What is the student-teacher ratio of Costello Elementary School?
Costello Elementary School has a student ration of 16:1, which is equal to the Michigan state average of 16:1.
What grades does Costello Elementary School offer ?
Costello Elementary School offers enrollment in grades Prekindergarten-5 (No virtual instruction).
What school district is Costello Elementary School part of?
Costello Elementary School is part of Troy School District.
School Reviews
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