Enrollment
362
Elementary
DISTRICT 430 · STATE 315
SCHOOL COMMUNITY·FORT ZUMWALT SCHOOL DISTRICT·NCES 290837002843
OSTMANN ELEM.
200 MERIWETHER LEWIS DR, O'FALLON, MO 63368 · (636) 281-3382 · St. Charles County
GRADES KG–05ELEMENTARY21-SUBURBREGULAR SCHOOL362 STUDENTS
Student : Teacher
12.2:1
30 FTE teachers
DISTRICT 12.2:1 · STATE 12.4:1
Free / Reduced Lunch
9%
31 students
DISTRICT 20% · STATE 54%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 60 | 17% |
| Grade 1 | 54 | 15% |
| Grade 2 | 55 | 15% |
| Grade 3 | 56 | 15% |
| Grade 4 | 73 | 20% |
| Grade 5 | 64 | 18% |
This year's kindergarten class (60) is 6% smaller than its 5th grade class (64).
Student demographics
35%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 45% · STATE 52% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
MAP 2024-25 . % Proficient + AdvancedEnglish Language Arts
69.1%
MO avg 44.9% . -2.1pp since 2021
Math
64.9%
MO avg 43.8% . +1.6pp since 2021
What this means: On the MAP, Missouri's statewide test, about 69 of every 100 students at this school read and write at grade level and about 65 of 100 do math at grade level. Across all Missouri schools, those numbers are about 45 and 44. Reading and writing scores are down about 2 points since 2021, while math scores are up about 2 points.
Performance levels, 2024-25
| Subject | Advanced | Proficient | Basic | Below Basic |
|---|---|---|---|---|
| English Language Arts | 33.5% | 35.6% | 24.6% | 6.2% |
| Math | 33.5% | 31.4% | 24.0% | 10.9% |
Share of tested students at each MAP level. Each student counts in one level, so a row adds to about 100%.
MAP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 69.1% | 64.9% |
| 2023-24 | 64.2% | 63.1% |
| 2022-23 | 69.1% | 61.7% |
| 2021-22 | 71.2% | 63.3% |
% Proficient + Advanced, all students and all tested grades.
Source: MAP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
65.1%
composite math + reading, all grades
Predicted
56.7%
based on MO schools with similar FRL share
Beats by
+8.4pp
above demographic expectation
What this means: About 65% of students here test proficient in math and reading, compared with the roughly 57% typical for Missouri schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Missouri's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like OSTMANN ELEM.
OSTMANN ELEM.'s state test result (65.1% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| OSTMANN ELEM. this school | 362 | 8.6% | 65.1% |
| POND ELEM. WILDWOOD | 380 | 11.8% | 60.3% |
| REED ELEMENTARY ST LOUIS | 410 | 8.3% | 76.6% |
| EMGE ELEM. O'FALLON | 348 | 11.8% | 68.5% |
| WREN HOLLOW ELEM. BALLWIN | 409 | 14.7% | 54.2% |
| MASON RIDGE ELEM. TOWN & COUNTRY | 405 | 8.1% | 69.8% |
Matched among Missouri elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where OSTMANN ELEM. ranks
Among elementary schools| Measure | This school | In Missouri | In St. Charles County |
|---|---|---|---|
| State test proficiency ranked highest first | 65.1% | #81 of 1,002 | #7 of 45 |
| Math proficiency ranked highest first | 64.9% | #102 of 1,019 ▲ 15 | #8 of 45 no change |
| Reading proficiency ranked highest first | 69.1% | #52 of 1,018 ▲ 35 | #6 of 45 ▲ 4 |
| 3-year test score change ranked biggest drop first | -0.3pp | #390 of 943 | #19 of 44 |
| Enrollment ranked largest first | 362 | #503 of 1,294 | #41 of 55 |
| Students per teacher ranked fewest first | 12.2:1 | #354 of 950 | #19 of 51 |
| Diversity index ranked most diverse first | 34.7% | #501 of 953 | #48 of 51 |
| Free and reduced lunch ranked highest share first | 8.6% | #1,127 of 1,165 | #50 of 55 |
| Enrollment change since 2017-18 ranked fastest growth first | +0.8% | #238 of 251 | #13 of 13 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
362
0 (0%) vs 2020
-59% since 2010-11, when it was 873
Student : Teacher
12.2:1
was 10.1:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 362 | 29.7 | 12.2:1 | 9% (31) |
| 2023-24 | 399 | 34.6 | 11.5:1 | 5% (20) |
| 2022-23 | 349 | 31.8 | 11.0:1 | 8% (27) |
| 2020-21 | 362 | 36 | 10.1:1 | 7% (27) |
| 2017-18 | 359 | 31.1 | 11.5:1 | 6% (22) |
| 2015-16 | 720 | 38 | 18.9:1 | 14% (98) |
| 2010-11 | 873 | 42 | 20.8:1 | 5% (46) |
Source: NCES Common Core of Data. Rows are the federal collections on file for OSTMANN ELEM..
Since 2017-18: students up 1% (359 to 362); teachers down 5% (31.1 to 29.7).
About OSTMANN ELEM.
OSTMANN ELEM. sits in O'FALLON, Missouri, and is classified as an elementary school. Total enrollment is 362 students, and the grades served are kindergarten through 5.
OSTMANN ELEM. reports to FORT ZUMWALT SCHOOL DISTRICT, which has 25 schools and 16,698 students.
The share of White students at OSTMANN ELEM. is 80%. The remaining shares are 8% Asian, 4% Black, 4% Hispanic, and 3% multiracial. In St. Charles County overall, the White share is about 84%. Measured by the diversity index, the student body scores 35%.
There are 29.7 full-time-equivalent teachers at OSTMANN ELEM., giving a ratio of 12.2:1. The average ratio among elementary schools in Missouri is similar, at 12.4:1. A total of 31 students, or 9%, are eligible for free or reduced-price lunch. That is 10 points below the 19% average for public schools in St. Charles County.
When test results are adjusted for free or reduced-price lunch eligibility, OSTMANN ELEM. is 8.4 points above its prediction. Actual: 65.1%. Predicted: 56.7%.
St. Charles County is the school's county. There, median household income comes to about $104,692, the share of adults with a bachelor's degree or higher is 43%, and about 4% of people live in poverty. St. Charles County's 93 public schools enroll about 59,314 students and include OSTMANN ELEM..
OSTMANN ELEM.'s nearest public school is TWIN CHIMNEYS ELEM. (about 0.6 miles). There are at least 8 more public schools inside five miles. Of the 9 nearby schools with scores, including this one, OSTMANN ELEM. is 4th on average proficiency.
NCES lists the school's locale as Suburb: Large. That means it sits in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Compared with 2020-21, when it had 362 students, enrollment in 2024-25 was about the same at 362. The student-to-teacher ratio went up from 10.1:1 to 12.2:1.
This page collects posts and questions about OSTMANN ELEM., such as athletics, class schedules, and weather closures. Members of the school community can share what they know.
St. Charles County at a glance
View full county profilePopulation
414,535
Census ACS
Median income
$104,692
Household, ACS
Bachelor's+
43%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
93
59,314 students
Quick facts
Related schools
Other schools in FORT ZUMWALT SCHOOL DISTRICT
- FT. ZUMWALT WEST HIGHHigh · 1,643 students
- FT. ZUMWALT NORTH HIGHHigh · 1,538 students
- FT. ZUMWALT SOUTH HIGHHigh · 1,212 students
- FT. ZUMWALT EAST HIGHHigh · 1,171 students
- FT. ZUWMALT WEST MIDDLEMiddle · 1,114 students
- FT. ZUMWALT NORTH MIDDLEMiddle · 1,019 students
Other schools in O'FALLON
- FT. ZUMWALT WEST HIGHHigh · 1,643 students
- FT. ZUMWALT NORTH HIGHHigh · 1,538 students
- FRONTIER MIDDLEMiddle · 1,243 students
- FT. ZUWMALT WEST MIDDLEMiddle · 1,114 students
- FT. ZUMWALT NORTH MIDDLEMiddle · 1,019 students
- PRAIRIE VIEW ELEM.Elementary · 696 students
Nearby schools
- TWIN CHIMNEYS ELEM.0.6 mi · 488
- DARDENNE ELEM.1.2 mi · 445
- EMGE ELEM.1.2 mi · 348
- FT. ZUWMALT WEST MIDDLE1.5 mi · 1,114
- CROSSROADS ELEM.1.6 mi · 757
- PHEASANT POINT ELEM.1.7 mi · 428
Frequently asked questions
About OSTMANN ELEM.How large is OSTMANN ELEM.?
OSTMANN ELEM. enrolls approximately 362 students in grades KG-05.
What grades does OSTMANN ELEM. serve?
OSTMANN ELEM. serves grades KG-05.
How many students per teacher at OSTMANN ELEM.?
Approximately 12.2:1 students per teacher at OSTMANN ELEM..
How diverse is OSTMANN ELEM.?
OSTMANN ELEM. reports a student body of 80% White, 4% Hispanic, 4% Black, 8% Asian, 3% Two or more.
Who oversees OSTMANN ELEM.?
OSTMANN ELEM. is overseen by FORT ZUMWALT SCHOOL DISTRICT in St. Charles County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.