Cougar Mountain Middle School
Issaquah, WA · Middle School · Grades 6-8
Cougar Mountain Middle School is a middle school in Issaquah, WA with 628 students enrolled and a 69% proficiency rate. Part of Issaquah School District. NCES data from the U.S. Department of Education.
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About This School
Cougar Mountain Middle School is a middle school located in Issaquah, Washington. The school serves 628 students in grades 6-8. The student-to-teacher ratio is 26.2:1.
According to EDFacts assessment data, 69% of students meet grade-level proficiency standards in combined math and reading.
11% of students qualify for free or reduced-price lunch.
Cougar Mountain Middle School is part of the Issaquah School District in Washington.
How This School Compares
Cougar Mountain Middle School has 628 students enrolled, making it smaller than the average school in Issaquah School District (651 students). Its 69% proficiency rate is 6 percentage points above the district average of 64%. Compared to the Washington state average of 49%, the school performs 20 points higher. The 26.2:1 student-teacher ratio is above the national average of 16:1.
Frequently Asked Questions
Cougar Mountain Middle School has 628 students enrolled in grades 6-8. The student-to-teacher ratio is 26.2:1.
According to EDFacts data, 69% of students at Cougar Mountain Middle School meet grade-level proficiency standards in combined math and reading assessments.
Cougar Mountain Middle School is part of the Issaquah School District in Issaquah, 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.
this entity is one of the data points covered by this site’s U.S. K-12 school outcomes and enrollment dataset. The detail above comes directly from NCES Common Core of Data and EDFacts; the context that follows situates the headline numbers against the broader distribution across U.S. public schools and districts.
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.
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.