Marie Schaefer Elem School
O Fallon, IL · Elementary School · Grades -1-5
Marie Schaefer Elem School is a elementary school in O Fallon, IL with 642 students enrolled and a 68% proficiency rate. Part of O Fallon CCSD 90. NCES data from the U.S. Department of Education.
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About This School
Marie Schaefer Elem School is a elementary school located in O Fallon, Illinois. The school serves 642 students in grades -1-5. The student-to-teacher ratio is 19.5:1.
According to EDFacts assessment data, 68% of students meet grade-level proficiency standards in combined math and reading.
22% of students qualify for free or reduced-price lunch.
Marie Schaefer Elem School is part of the O Fallon CCSD 90 in Illinois.
How This School Compares
Marie Schaefer Elem School has 642 students enrolled, making it larger than the average school in O Fallon CCSD 90 (563 students). Its 68% proficiency rate is 5 percentage points above the district average of 62%. Compared to the Illinois state average of 48%, the school performs 19 points higher.
Frequently Asked Questions
Marie Schaefer Elem School has 642 students enrolled in grades -1-5. The student-to-teacher ratio is 19.5:1.
According to EDFacts data, 68% of students at Marie Schaefer Elem School meet grade-level proficiency standards in combined math and reading assessments.
Marie Schaefer Elem School is part of the O Fallon CCSD 90 in O Fallon, Illinois. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
The this entity record above pulls directly from NCES Common Core of Data and EDFacts. What follows is the per-entity context — how this entity sits in the broader U.S. K-12 school outcomes and enrollment distribution and which underlying factors drive the headline numbers.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.