Cheldelin Middle School
Corvallis, OR · Middle School · Grades 6-8
Cheldelin Middle School is a middle school in Corvallis, OR with 570 students enrolled and a 62% proficiency rate. Part of Corvallis SD 509J. NCES data from the U.S. Department of Education.
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About This School
Cheldelin Middle School is a middle school located in Corvallis, Oregon. The school serves 570 students in grades 6-8. The student-to-teacher ratio is 19.7:1.
According to EDFacts assessment data, 62% of students meet grade-level proficiency standards in combined math and reading.
31% of students qualify for free or reduced-price lunch.
Cheldelin Middle School is part of the Corvallis SD 509J in Oregon.
How This School Compares
Cheldelin Middle School has 570 students enrolled, making it larger than the average school in Corvallis SD 509J (484 students). Its 62% proficiency rate is 9 percentage points above the district average of 53%. Compared to the Oregon state average of 48%, the school performs 14 points higher.
Frequently Asked Questions
Cheldelin Middle School has 570 students enrolled in grades 6-8. The student-to-teacher ratio is 19.7:1.
According to EDFacts data, 62% of students at Cheldelin Middle School meet grade-level proficiency standards in combined math and reading assessments.
Cheldelin Middle School is part of the Corvallis SD 509J in Corvallis, Oregon. 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.
The methodology behind every numeric value on this page is publicly documented on the NCES Common Core of Data and EDFacts portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.