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A

Ostmann Elem.

PublicElementaryGrades K–5

200 Meriwether Lewis Dr, O'Fallon, MO 63368 · (636) 281-3382 · Part of Fort Zumwalt R-II School District

Dardenne Prairie’s School Grade A better than 89% of Missouri school districts

Directions
Students
362
Students per teacher
12:1
Free or reduced lunch
9%
Setting
Suburb
Grades
K–5
The gist

What stands out about Ostmann Elem.

  • Its own letter, A: reading and math results near the top of Missouri’s public schools
  • Math proficiency 27 pts above the state
  • Reading / language arts 22 pts above the state
  • Small classes: 12 students per teacher
  • Next stop for Dardenne Prairie kids: 8 middle schools

On the path

Where Dardenne Prairie kids come from and go next. The whole path →

K–5Ostmann Elem.You are here
6–88 middle schoolsDepends on your address

Test scores

2020–21
Math proficiency62%
State average 35.3%
Reading / language arts67%
State average 45.2%

Its own letter, A, places these results among Missouri’s 2,023 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

200 Meriwether Lewis Dr, O'Fallon

Students

Enrollment by grade
Kindergarten60
Grade 154
Grade 255
Grade 356
Grade 473
Grade 564
Enrollment over time
362’20
363’21
349’22
399’23
362’24

About steady since 2020–21.

Who goes here
White 80%Asian 8%Black 4%Hispanic 4%Two or more races 3%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Ostmann Elem. from Dardenne Prairie families.

Other schools in Fort Zumwalt R-II School District

The district →
Early Childhood Center
Prekindergarten · Grades PK · St. Peters
307 students8:1
Progress South Elem.
Elementary · Grades K–5 · St Peters
A
642 students13:1
Westhoff Elem.
Elementary · Grades K–5 · O'Fallon
A−
534 students14:1
Twin Chimneys Elem.
Elementary · Grades K–5 · O'Fallon
A
488 students13:1
Hawthorn Elem.
Elementary · Grades K–5 · St Peters
B+
458 students12:1
Dardenne Elem.
Elementary · Grades K–5 · O'Fallon
B+
445 students12:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Missouri’s other public schools; Dardenne Prairie’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.