Serving 506 students in grades 6-8, Thunder Mountain Middle School ranks in the top 50% of all schools in Washington for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 42% (which is higher than the Washington state average of 41%). The percentage of students achieving proficiency in reading/language arts is 58% (which is higher than the Washington state average of 53%).
The student-teacher ratio of 23:1 is higher than the Washington state level of 17:1.
Minority enrollment is 32% of the student body (majority Hispanic), which is lower than the Washington state average of 53% (majority Hispanic).
Quick Facts (2026)
- Grades: 6-8
- Enrollment: 506 students
- Student-Teacher Ratio: 23:1
- Minority Enrollment: 32%
- Overall Testing Rank: Top 50% in WA
- Math Proficiency: 42% (Top 50%)
- Reading Proficiency: 58% (Top 50%)
- Science Proficiency: 50-54% (Top 50%)
- Source: National Center for Education Statistics (NCES), WA Dept. of Education
School Overview
Thunder Mountain Middle School's student population of 506 students has grown by 7% over five school years.
The teacher population of 22 teachers has declined by 8% over five school years.
Grades Offered
Grades 6-8
(No virtual instruction)
(No virtual instruction)
Total Students
506 students
Total Classroom Teachers
22 teachers
School Motto
Truth and Honor
School Rankings
Thunder Mountain Middle School ranks within the top 50% of all 2,088 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of Thunder Mountain Middle School is 0.50, which is less than the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#745 out of 2088 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
42%
41%
Reading/Language Arts Test Scores (% Proficient)
58%
53%
Science Test Scores (% Proficient)
50-54%
49%
Student-Teacher Ratio
23:1
17:1
American Indian
1%
1%
Asian
6%
9%
Hispanic
19%
27%
Black
1%
5%
White
68%
47%
Hawaiian
n/a
2%
Two or more races
5%
9%
All Ethnic Groups
Eligible for Free Lunch
22%
39%
Eligible for Reduced Lunch
8%
9%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WA Dept. of Education
Frequently Asked Questions
What is Thunder Mountain Middle School's ranking?
Thunder Mountain Middle School is ranked #745 out of 2,088 schools, which ranks it among the top 50% of public schools in Washington.
What percent of students have achieved state testing proficiency in math and reading?
42% of students have achieved math proficiency (compared to the 41% WA state average), while 58% of students have achieved reading proficiency (compared to the 53% WA state average).
How many students attend Thunder Mountain Middle School?
506 students attend Thunder Mountain Middle School.
What is the racial composition of the student body?
68% of Thunder Mountain Middle School students are White, 19% of students are Hispanic, 6% of students are Asian, 5% of students are Two or more races, 1% of students are American Indian, and 1% of students are Black.
What is the student-teacher ratio of Thunder Mountain Middle School?
Thunder Mountain Middle School has a student ration of 23:1, which is higher than the Washington state average of 17:1.
What grades does Thunder Mountain Middle School offer ?
Thunder Mountain Middle School offers enrollment in grades 6-8 (No virtual instruction).
What school district is Thunder Mountain Middle School part of?
Thunder Mountain Middle School is part of Enumclaw School District.
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