OSTMANN ELEM.

OSTMANN ELEM. operates as a reasonably sized K-5 school in O'FALLON, Missouri, overseen by FORT ZUMWALT SCHOOL DISTRICT. Current enrollment sits at 362 students spanning grades K through 5.

OSTMANN ELEM. is one of 25 schools operated by FORT ZUMWALT SCHOOL DISTRICT, a district that teaches 16,698 students overall.

On demographics, OSTMANN ELEM. shows that nearly all students (80%) are White. Other groups include 8% Asian, 4% Black, 4% Hispanic, 3% multiracial. That mix tracks the wider county fairly closely.

Looking at school resources, Staff filings list 30 full-time-equivalent teachers, which works out to roughly 12.2:1 students per teacher. The state averages about 12.4:1, putting this campus right in line with peers. Roughly 9% of students at OSTMANN ELEM. qualify for free or reduced-price lunch, often used as a Title I proxy. By comparison, St. Charles County runs at roughly 19%, so the school's eligibility rate is meaningfully below the surrounding baseline.

On a residual basis (actual vs predicted given the student mix), OSTMANN ELEM. sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 51.1%; this one delivers 50.5%.

Around the school, community-level numbers for St. Charles County indicate median household earnings sit near $104,692, 43% of adults hold a bachelor's degree or higher, and the poverty rate sits near 4%. Across St. Charles County's 93 public schools (combined enrollment of about 59,314 students), OSTMANN ELEM. is one campus in the mix.

The closest other public school is TWIN CHIMNEYS ELEM., roughly 0.6 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts OSTMANN ELEM. at 6th of 9; the average score across the group is 56.9%.

The campus sits in a residential setting.

Over the past 7-year window. Looking back 7 years, enrollment at OSTMANN ELEM. has changed only slightly, going from 359 students in 2018 to 362 in 2025. White enrollment moved from 85% to 80% across the same window.

Within the allk12 community for this school, recent activity here tends to focus on school events, parent volunteer needs, and clubs. Members of the school community can share what they know.