Home > Missouri > St. Charles County > O Fallon

Ostmann Elementary School

200 Meriwether Lewis Dr
O Fallon, MO 63368

10/

Top 5%

oes.fz.k12.mo.us

Serving 399 students in grades Kindergarten-5, Ostmann Elementary School ranks in the top 5% of all schools in Missouri for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).

The percentage of students achieving is 60-64% (which is higher than the Missouri state average of 40%). The percentage of students achieving is 70-74% (which is higher than the Missouri state average of 43%).

The student-teacher ratio of 11:1 is lower than the Missouri state level of 12:1.

Minority enrollment is 17% of the student body (majority Asian), which is lower than the Missouri state average of 32% (majority Black).

Quick Facts (2025-26)

Grades: Kindergarten-5
Enrollment: 399 students
Student-Teacher Ratio: 11:1
Minority Enrollment: 17%
: Top 5% in MO
: 60-64% (Top 10%)
: 70-74% (Top 5%)
: 60-69% (Top 5%)
Source: National Center for Education Statistics (NCES), MO Dept. of Education

Top Rankings

Ostmann Elementary School ranks among the top 20% of public schools in Missouri for:

School Overview

Ostmann Elementary School's student population of 399 students has grown by 9% over five school years.

The teacher population of 35 teachers has grown by 6% over five school years.

Grades Offered

Grades Kindergarten-5
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Ostmann Elementary School
Kind	60
1	56
2	59
3	71
4	72
5	81

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Total Students

399 students

View Data

Total Students Trends Over Years (2003-2023)
Year	Ostmann Elementary School
2023	349
2022	363
2021	362
2020	365
2019	365
2018	712
2017	712
2016	720
2015	721
2014	802
2013	816
2012	860
2011	873
2010	669
2009	662
2008	687
2007	681
2006	606
2005	552
2004	486
2003	389

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Gender %

Total Classroom Teachers

35 teachers

View Data

Total Classroom Teachers Trends Over Years (2003-2023)
Year	Ostmann Elementary School
2023	32
2022	36
2021	36
2020	33
2019	33
2018	36
2017	36
2016	39
2015	35
2014	33
2013	38
2012	41
2011	43
2010	40
2009	41
2008	41
2007	32
2006	33
2005	29
2004	24
2003	21

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School Rankings

Ostmann Elementary School ranks within the top 5% of all 2,076 schools in Missouri (based off of combined math and reading proficiency testing data).

The of Ostmann Elementary School is 0.31, which is less than the diversity score at state average of 0.51. The school's diversity has stayed relatively flat over five school years.

This School

State Level (MO)

#76 out of 2076 schools
(Top 5%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Ostmann Elementary School
2023	#76
2022	#80
2021	#84
2019	#112
2018	#182
2017	#81
2016	#250
2015	#169
2014	#383
2013	#326
2012	#588

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60-64%

40%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	62%	40%	57%
2022	62%	39%	59%
2021	62%	37%	54%
2019	66%	42%	61%
2018	62%	42%	58%
2017	75%	47%	61%
2016	70%	48%	61%
2015	67%	44%	56%
2014	63%	52%	58%
2013	64%	53%	58%
2012	55%	55%	62%

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70-74%

43%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2022	72%	43%	58%
2021	67%	46%	60%
2019	72%	49%	64%
2018	67%	49%	58%
2017	82%	61%	75%
2016	81%	63%	75%
2015	77%	60%	72%
2014	63%	53%	61%
2013	69%	55%	64%
2012	68%	55%	65%
2011	63%	55%	63%

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60-69%

38%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2022	64%	38%	53%
2021	62%	37%	52%

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Student-Teacher Ratio

11:1

12:1

View Data

Student-Teacher Ratio Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	11:1	13:1	12:1
2022	10:1	13:1	12:1
2021	10:1	13:1	12:1
2020	11:1	13:1	13:1
2019	11:1	13:1	13:1
2018	20:1	14:1	14:1
2017	20:1	13:1	14:1
2016	18:1	14:1	15:1
2015	21:1	14:1	16:1
2014	25:1	14:1	16:1
2013	21:1	14:1	16:1
2012	21:1	14:1	16:1
2011	20:1	14:1	15:1
2010	17:1	13:1	16:1
2009	16:1	13:1	16:1
2008	17:1	13:1	16:1
2007	21:1	15:1	17:1
2006	18:1	14:1	17:1
2005	19:1	14:1	17:1
2004	20:1	14:1	17:1
2003	19:1	14:1	17:1

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American Indian

n/a

Asian

View Data

Asian Student Percentage Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	5%	2%	4%
2022	5%	2%	5%
2021	4%	2%	4%
2020	5%	2%	4%
2019	5%	2%	4%
2018	6%	2%	3%
2017	6%	2%	3%
2016	5%	3%	4%
2015	5%	2%	3%
2014	4%	3%	3%
2013	4%	2%	4%
2012	3%	2%	3%
2011	3%	2%	3%
2010	3%	2%	3%
2009	2%	2%	3%
2008	2%	2%	3%
2007	2%	3%	2%
2006	3%	2%	2%
2005	1%	2%	1%
2004	2%	1%	2%
2003	2%	2%	1%

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Hispanic

View Data

Hispanic Student Percentage Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	5%	8%	7%
2022	4%	8%	6%
2021	5%	7%	6%
2020	4%	7%	6%
2019	4%	7%	6%
2018	4%	6%	5%
2017	4%	6%	5%
2016	4%	6%	4%
2015	4%	6%	4%
2014	3%	6%	4%
2013	2%	5%	4%
2012	3%	5%	4%
2011	2%	5%	3%
2010	1%	4%	2%
2009	1%	4%	2%
2008	1%	4%	2%
2007	1%	3%	2%
2006	1%	3%	2%
2005	1%	3%	2%
2004	2%	3%	1%
2003	1%	2%	1%

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Black

15%

View Data

Black Student Percentage Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	3%	15%	8%
2022	4%	15%	7%
2021	4%	15%	7%
2020	3%	16%	6%
2019	3%	16%	6%
2018	3%	16%	6%
2017	3%	16%	6%
2016	4%	16%	6%
2015	2%	16%	6%
2014	3%	16%	6%
2013	3%	17%	5%
2012	4%	17%	6%
2011	3%	17%	6%
2010	3%	18%	7%
2009	4%	18%	6%
2008	4%	18%	6%
2007	4%	18%	6%
2006	4%	18%	5%
2005	4%	18%	5%
2004	2%	18%	4%
2003	2%	18%	4%

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White

83%

68%

View Data

White Student Percentage Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	81%	69%	75%
2022	83%	69%	76%
2021	84%	70%	77%
2020	84%	71%	79%
2019	84%	71%	79%
2018	84%	72%	82%
2017	84%	72%	82%
2016	86%	72%	83%
2015	87%	73%	84%
2014	88%	73%	84%
2013	89%	74%	84%
2012	89%	74%	85%
2011	90%	75%	85%
2010	93%	76%	88%
2009	93%	76%	89%
2008	93%	76%	89%
2007	93%	76%	90%
2006	92%	77%	91%
2005	94%	77%	92%
2004	94%	78%	93%
2003	95%	78%	94%

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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	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	5%	6%	6%
2022	4%	5%	6%
2021	3%	5%	6%
2020	4%	4%	5%
2019	4%	4%	5%
2018	3%	4%	4%
2017	3%	4%	4%
2016	1%	3%	3%
2015	2%	3%	3%
2014	2%	2%	3%
2013	2%	2%	3%

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All Ethnic Groups

0.31

0.51

View Data

Diversity Score Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	0.34	0.50	0.42
2022	0.31	0.50	0.41
2021	0.29	0.48	0.39
2020	0.29	0.47	0.36
2019	0.29	0.47	0.36
2018	0.29	0.45	0.32
2017	0.29	0.45	0.32
2016	0.26	0.46	0.31
2015	0.24	0.44	0.29
2014	0.22	0.44	0.29
2013	0.21	0.42	0.29
2012	0.21	0.42	0.28
2011	0.19	0.41	0.27
2010	0.13	0.39	0.22
2009	0.13	0.39	0.21
2008	0.13	0.39	0.20
2007	0.13	0.39	0.18
2006	0.15	0.37	0.17
2005	0.12	0.38	0.15
2004	0.12	0.36	0.14
2003	0.10	0.36	0.12

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Eligible for

42%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	5%	41%	16%
2022	3%	40%	14%
2021	6%	43%	17%
2020	5%	44%	17%
2019	5%	44%	17%
2018	7%	44%	18%
2017	7%	44%	18%
2016	11%	44%	18%
2015	9%	44%	18%
2014	11%	42%	19%
2013	6%	38%	18%
2012	3%	38%	16%
2011	4%	37%	15%
2010	4%	36%	13%
2009	4%	31%	10%
2008	2%	32%	10%
2007	2%	31%	9%
2006	2%	32%	8%
2005	1%	32%	8%
2004	1%	30%	7%
2003	1%	29%	7%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2004-2023)
Year	Ostmann Elementary School	Missouri	Fort Zumwalt School District
2023	2%	7%	4%
2022	1%	5%	2%
2021	1%	6%	4%
2020	2%	6%	5%
2019	2%	6%	5%
2018	2%	6%	5%
2017	2%	6%	5%
2016	1%	6%	3%
2015	3%	7%	5%
2014	4%	7%	5%
2013	2%	7%	4%
2012	2%	7%	4%
2011	2%	7%	4%
2010	2%	8%	4%
2009	2%	8%	4%
2007	2%	8%	4%
2006	2%	8%	4%
2005	2%	7%	3%
2004	1%	7%	3%

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School Statewide Testing

View Education Department Test Scores

School District Name

Fort Zumwalt School District

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

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Ostmann Elementary School's ranking?

Ostmann Elementary School is ranked #76 out of 2,076 schools, which ranks it among the top 5% of public schools in Missouri.

What schools are Ostmann Elementary School often compared to?

Ostmann Elementary Schoolis often viewed alongside schools like Dardenne Elementary School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

60-64% of students have achieved math proficiency (compared to the 40% MO state average), while 70-74% of students have achieved reading proficiency (compared to the 43% MO state average).

How many students attend Ostmann Elementary School?

399 students attend Ostmann Elementary School.

What is the racial composition of the student body?

83% of Ostmann Elementary School students are White, 7% of students are Asian, 4% of students are Hispanic, 4% of students are Two or more races, and 2% of students are Black.

What is the student-teacher ratio of Ostmann Elementary School?

Ostmann Elementary School has a student ration of 11:1, which is lower than the Missouri state average of 12:1.

What grades does Ostmann Elementary School offer ?

Ostmann Elementary School offers enrollment in grades Kindergarten-5 (No virtual instruction).

What school district is Ostmann Elementary School part of?

Ostmann Elementary School is part of Fort Zumwalt School District.

School Reviews

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Quick Facts (2025-26)

Grades: Kindergarten-5
Enrollment: 399 students
Student-Teacher Ratio: 11:1
Minority Enrollment: 17%
: Top 5%
: 60-64% (Top 10%)
: 70-74% (Top 5%)
: 60-69% (Top 5%)
Source: National Center for Education Statistics (NCES), MO Dept. of Education