Thunder Mountain Middle School
Enumclaw, WA · Middle School · Grades 6-8
Thunder Mountain Middle School is a middle school in Enumclaw, WA with 454 students enrolled and a 64% proficiency rate. Part of Enumclaw School District. NCES data from the U.S. Department of Education.
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About This School
Thunder Mountain Middle School is a middle school located in Enumclaw, Washington. The school serves 454 students in grades 6-8. The student-to-teacher ratio is 20.6:1.
According to EDFacts assessment data, 64% of students meet grade-level proficiency standards in combined math and reading.
31% of students qualify for free or reduced-price lunch.
Thunder Mountain Middle School is part of the Enumclaw School District in Washington.
How This School Compares
Thunder Mountain Middle School has 454 students enrolled, making it larger than the average school in Enumclaw School District (444 students). Its 64% proficiency rate is 4 percentage points above the district average of 59%. Compared to the Washington state average of 49%, the school performs 14 points higher. The 20.6:1 student-teacher ratio is above the national average of 16:1.
Frequently Asked Questions
Thunder Mountain Middle School has 454 students enrolled in grades 6-8. The student-to-teacher ratio is 20.6:1.
According to EDFacts data, 64% of students at Thunder Mountain Middle School meet grade-level proficiency standards in combined math and reading assessments.
Thunder Mountain Middle School is part of the Enumclaw School District in Enumclaw, Washington. 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.
For this entity, the underlying data on this page comes from NCES Common Core of Data and EDFacts. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
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.
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.