Ostmann Elementary School is located in O'Fallon, MO and is one of 15 elementary schools in Ft. Zumwalt R-ii School District. It is a public school that serves 873 students in grades PK-5. See Ostmann Elementary School's test results
to learn more about school performance.
In 2011, Ostmann Elementary School had 20 students for every full-time equivalent teacher. The Missouri average is 14 students per full-time equivalent teacher.