Costello Elementary School (Ranked Top 10% for 2026)

1333 Hamman Dr
Troy, MI 48085

( shown in map)

10/

Top 10%

Serving 406 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 is 61% (which is higher than the Michigan state average of 35%). The percentage of students achieving is 72% (which is higher than the Michigan state average of 45%).

The student-teacher ratio of 16:1 is lower than the Michigan state level of 17:1.

Minority enrollment is 43% 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: 406 students
Student-Teacher Ratio: 16:1
Minority Enrollment: 43%
: Top 10% in MI
: 61% (Top 10%)
: 72% (Top 10%)
: 65-69% (Top 5%)
Source: National Center for Education Statistics (NCES), MI Dept. of Education

<�鶹��ý class="so-dt-title" id="top-rankings">Top Rankings

Costello Elementary School ranks among the top 20% of public schools in Michigan for:

Category

Attribute

Overall Rank

Highest overall rank (Top 10%)

Math Proficiency

Highest math proficiency (Top 10%)

Reading/Language Arts Proficiency

Highest reading/language arts proficiency (Top 10%)

Science Proficiency

Highest science proficiency (Top 5%)

Diversity

Most diverse schools (Top 20%)

<�鶹��ý class='so-dt-title' id="overview">School Overview

Costello Elementary School's student population of 406 students has stayed relatively flat over five school years.

The teacher population of 25 teachers has stayed relatively flat over five school years.

Grades Offered

Grades Prekindergarten-5
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Costello Elementary School
Kind	56
1	60
2	69
3	76
4	73
5	72

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Total Students

406 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Costello Elementary School
2023	431
2022	416
2021	407
2020	362
2019	362
2018	360
2017	360
2016	340
2015	330
2014	348
2013	347
2012	349
2011	313
2010	350
2009	346
2008	337
2007	353
2006	334
2005	349
2004	310
2003	332
2002	353
2001	357
2000	350
1999	383
1998	399
1997	420
1996	403
1995	404
1994	412
1993	420
1992	396
1991	413
1990	409
1989	395
1988	377
1987	411

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Gender %

Total Classroom Teachers

25 teachers

View Data

Total Classroom Teachers Trends Over Years (1990-2023)
Year	Costello Elementary School
2023	28
2022	28
2021	25
2020	25
2019	25
2018	22
2017	22
2016	21
2015	21
2014	21
2013	22
2012	21
2011	19
2010	21
2009	21
2008	21
2007	22
2006	22
2005	24
2004	23
2003	24
2002	20
2001	20
2000	21
1999	23
1998	24
1997	24
1996	23
1995	23
1994	22
1990	31

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Year Founded

1972

School Calendar

<�鶹��ý class='so-dt-title' id="school-rankings">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 of Costello Elementary School is 0.58, which is more than the diversity score at state average of 0.56. The school's diversity has stayed relatively flat over five school years.

This School

State Level (MI)

#190 out of 3025 schools
(Top 10%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Costello Elementary School
2023	#190
2022	#126
2021	#288
2019	#176
2018	#171
2017	#249
2016	#199
2015	#128
2014	#106
2013	#102
2012	#35

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61%

35%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	61%	35%	65%
2022	67%	34%	64%
2021	62%	36%	68%
2019	67%	40%	71%
2018	62%	37%	59%
2017	62%	39%	69%
2016	67%	38%	69%
2015	67%	37%	72%
2014	72%	41%	75%
2013	72%	41%	74%
2012	82%	37%	72%

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72%

45%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Costello Elementary School	Michigan	Troy School District
2022	72%	45%	72%
2021	62%	48%	75%
2019	72%	49%	77%
2018	72%	43%	59%
2017	72%	49%	74%
2016	72%	50%	76%
2015	77%	49%	80%
2014	87%	67%	86%
2013	87%	65%	85%
2012	87%	64%	83%
2011	95%	80%	92%

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65-69%

38%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Costello Elementary School	Michigan	Troy School District
2022	67%	38%	56%
2021	34%	23%	49%

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Student-Teacher Ratio

16:1

17:1

View Data

Student-Teacher Ratio Comparison Over Years (1990-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	15:1	17:1	16:1
2022	15:1	17:1	16:1
2021	16:1	17:1	17:1
2020	14:1	18:1	17:1
2019	14:1	18:1	17:1
2018	16:1	18:1	17:1
2017	16:1	18:1	17:1
2016	16:1	18:1	17:1
2015	16:1	18:1	17:1
2014	17:1	18:1	18:1
2013	16:1	18:1	18:1
2012	17:1	18:1	18:1
2011	17:1	18:1	19:1
2010	16:1	18:1	18:1
2009	17:1	18:1	18:1
2008	16:1	18:1	18:1
2007	16:1	19:1	18:1
2006	15:1	18:1	17:1
2005	15:1	18:1	17:1
2004	13:1	19:1	17:1
2003	14:1	19:1	18:1
2002	18:1	18:1	19:1
2001	18:1	18:1	18:1
2000	17:1	18:1	19:1
1999	17:1	19:1	19:1
1998	17:1	19:1	18:1
1997	18:1	19:1	19:1
1996	18:1	20:1	20:1
1995	18:1	20:1	19:1
1994	19:1	20:1	19:1
1990	13:1	15:1	13:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (2005-2006)
Year	Costello Elementary School	Michigan	Troy School District
2006	1%	1%
2005	1%	2%

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Asian

31%

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	32%	3%	37%
2022	30%	3%	37%
2021	28%	3%	38%
2020	28%	3%	37%
2019	28%	3%	37%
2018	20%	3%	34%
2017	20%	3%	34%
2016	19%	3%	32%
2015	19%	3%	32%
2014	16%	3%	29%
2013	14%	3%	27%
2012	11%	3%	26%
2011	14%	3%	26%
2010	15%	3%	28%
2009	17%	3%	27%
2008	18%	3%	25%
2007	19%	3%	24%
2006	21%	2%	23%
2005	18%	2%	21%
2004	18%	2%	20%
2003	19%	2%	20%
2002	20%	2%	19%
2001	19%	2%	17%
2000	18%	2%	16%
1999	16%	2%	14%
1998	13%	2%	12%
1997	14%	2%	12%
1996	8%	2%	11%
1995	7%	1%	10%
1994	6%	1%	9%
1993	12%	1%	9%
1992	10%	1%	9%
1991	6%	2%	8%

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Hispanic

View Data

Hispanic Student Percentage Comparison Over Years (1988-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	6%	9%	5%
2022	6%	9%	5%
2021	6%	8%	4%
2020	4%	8%	4%
2019	4%	8%	4%
2018	4%	8%	3%
2017	4%	8%	3%
2016	5%	7%	3%
2015	4%	7%	2%
2014	3%	7%	3%
2013	5%	6%	3%
2012	3%	6%	3%
2011	4%	6%	3%
2010	3%	5%	2%
2009	2%	5%	2%
2008	2%	5%	2%
2007	2%	4%	2%
2006	1%	4%	2%
2005	1%	4%	2%
2004	1%	4%	1%
2003	1%	4%	1%
2002	1%	4%	1%
1998	1%	3%	1%
1997	1%	3%	1%
1996	1%	3%	1%
1995	1%	3%	1%
1992	2%	2%	1%
1991	1%	2%	1%
1990	1%	2%	1%
1989	1%	2%	1%
1988	1%	2%

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Black

18%

View Data

Black Student Percentage Comparison Over Years (1995-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	1%	18%	5%
2022	2%	18%	5%
2021	1%	18%	5%
2020	3%	18%	4%
2019	3%	18%	4%
2018	5%	18%	5%
2017	5%	18%	5%
2016	3%	18%	5%
2015	5%	18%	5%
2014	4%	18%	6%
2013	3%	18%	6%
2012	4%	19%	6%
2011	5%	19%	6%
2010	5%	20%	6%
2009	5%	20%	6%
2008	5%	20%	5%
2007	4%	20%	4%
2006	4%	20%	3%
2005	4%	20%	4%
2004	5%	20%	4%
2003	2%	20%	3%
2002	2%	20%	3%
2001	1%	19%	3%
2000	1%	19%	2%
1999	1%	19%	2%
1997	1%	18%	3%
1996	1%	18%	2%
1995	1%	18%	2%

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White

57%

63%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	56%	64%	48%
2022	57%	64%	49%
2021	59%	65%	50%
2020	62%	66%	52%
2019	62%	66%	52%
2018	68%	66%	56%
2017	68%	66%	56%
2016	72%	67%	57%
2015	71%	68%	58%
2014	75%	69%	60%
2013	75%	69%	61%
2012	79%	69%	62%
2011	75%	70%	62%
2010	77%	70%	64%
2009	76%	71%	65%
2008	75%	71%	68%
2007	75%	71%	70%
2006	73%	73%	72%
2005	76%	72%	73%
2004	76%	73%	75%
2003	78%	72%	76%
2002	77%	73%	77%
2001	80%	74%	79%
2000	81%	75%	81%
1999	83%	75%	83%
1998	86%	75%	85%
1997	84%	76%	84%
1996	90%	76%	86%
1995	91%	77%	87%
1994	92%	79%	88%
1993	87%	79%	88%
1992	88%	79%	88%
1991	93%	78%	90%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	5%	5%	5%
2022	5%	5%	4%
2021	5%	5%	3%
2020	2%	4%	3%
2019	2%	4%	3%
2018	3%	4%	2%
2017	3%	4%	2%
2016	1%	3%	3%
2015	1%	3%	3%
2014	2%	2%	2%
2013	3%	2%	3%

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All Ethnic Groups

0.58

0.56

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	0.58	0.55	0.63
2022	0.58	0.55	0.62
2021	0.57	0.54	0.61
2020	0.54	0.53	0.60
2019	0.54	0.53	0.60
2018	0.50	0.53	0.58
2017	0.50	0.53	0.58
2016	0.45	0.52	0.57
2015	0.46	0.50	0.56
2014	0.41	0.50	0.56
2013	0.42	0.49	0.55
2012	0.36	0.49	0.55
2011	0.43	0.48	0.55
2010	0.39	0.47	0.51
2009	0.39	0.46	0.51
2008	0.41	0.46	0.48
2007	0.41	0.46	0.45
2006	0.43	0.43	0.44
2005	0.39	0.44	0.42
2004	0.39	0.43	0.40
2003	0.36	0.44	0.39
2002	0.36	0.42	0.37
2001	0.33	0.42	0.35
2000	0.31	0.40	0.33
1999	0.29	0.40	0.30
1998	0.25	0.40	0.27
1997	0.28	0.39	0.27
1996	0.18	0.39	0.24
1995	0.17	0.37	0.23
1994	0.15	0.35	0.21
1993	0.22	0.35	0.21
1992	0.22	0.35	0.22
1991	0.13	0.37	0.18

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Participates in the

Yes

Eligible for

13%

50%

View Data

Free Lunch Eligibility Comparison Over Years (1993-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	13%	49%	15%
2022	11%	47%	14%
2021	10%	46%	12%
2020	9%	45%	12%
2019	9%	45%	12%
2018	8%	40%	8%
2017	8%	40%	8%
2016	8%	40%	8%
2015	9%	41%	9%
2014	7%	43%	11%
2013	11%	42%	11%
2012	13%	42%	11%
2011	10%	41%	11%
2010	7%	40%	9%
2009	7%	35%	6%
2008	3%	31%	4%
2007	4%	30%	3%
2006	3%	30%	3%
2005	2%	28%	3%
2004	1%	27%	3%
2003	2%	25%	2%
2002	1%	25%	2%
2001	1%	24%	2%
2000	1%	25%	2%
1999	1%	25%	2%
1998	1%	26%	2%
1997	1%	26%	3%
1996	2%	25%	2%
1995	4%	25%	2%
1994	3%	23%	2%
1993	1%	25%	1%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2000-2023)
Year	Costello Elementary School	Michigan	Troy School District
2023	2%	4%	2%
2022	1%	4%	1%
2021	1%	4%	1%
2020	3%	5%	3%
2019	3%	5%	3%
2018	1%	6%	3%
2017	1%	6%	3%
2016	1%	6%	2%
2014	2%	6%	2%
2013	3%	6%	3%
2012	2%	5%	2%
2011	3%	5%	2%
2010	3%	6%	2%
2008	1%	7%	1%
2006	1%	7%	1%
2005	1%	6%	1%
2004	1%	6%	1%
2001	1%	6%	1%
2000	1%	6%	1%

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School Statewide Testing

School District Name

Troy School District

Source: National Center for Education Statistics (NCES), MI Dept. of Education

<�鶹��ý class='so-dt-title' id="school-notes">School Notes

School Mascot: Cardinals

Profile last updated: 02/09/2025

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<�鶹��ý class='so-dt-title' id='faq'>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?

406 students attend Costello Elementary School.

What is the racial composition of the student body?

57% of Costello Elementary School students are White, 31% of students are Asian, 6% of students are Hispanic, 5% of students are Two or more races, and 1% 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 lower than the Michigan state average of 17:1.

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.

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