Serving 775 students in grades 6-8, Mountainside 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 40% (which is equal to the Washington state average of 40%). The percentage of students achieving proficiency in reading/language arts is 60% (which is higher than the Washington state average of 53%).
The student:teacher ratio of 18:1 is higher than the Washington state level of 16:1.
Minority enrollment is 20% of the student body (majority Hispanic and Black), which is lower than the Washington state average of 52% (majority Hispanic).
Quick Stats (2025)
Grades: 6-8
Enrollment: 775 students
Student:Teacher Ratio: 18:1
Minority Enrollment: 20%
Overall Testing Rank
: Top 50% in WA
Math Proficiency
: 40% (Top 50%)
Reading Proficiency
: 60% (Top 50%)
Science Proficiency
: 44% (Btm 50%)
Source: National Center for Education Statistics (NCES), WA Dept. of Education
Mountainside Middle School ranks within the top 50% of all 2,113 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of Mountainside Middle School is 0.35, 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.
Mountainside Middle School is ranked #825 out of 2,113 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?
40% of students have achieved math proficiency (compared to the 40% WA state average), while 60% of students have achieved reading proficiency (compared to the 53% WA state average).
How many students attend Mountainside Middle School?
775 students attend Mountainside Middle School.
What is the racial composition of the student body?
80% of Mountainside Middle School students are White, 8% of students are Two or more races, 5% of students are Hispanic, 3% of students are Black, 2% of students are Hawaiian, 1% of students are American Indian, and 1% of students are Asian.
What is the student:teacher ratio of Mountainside Middle School?
Mountainside Middle School has a student ration of 18:1, which is higher than the Washington state average of 16:1.
What grades does Mountainside Middle School offer ?
Mountainside Middle School offers enrollment in grades 6-8
What school district is Mountainside Middle School part of?
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Quick Stats (2025)
Grades: 6-8
Enrollment: 775 students
Student:Teacher Ratio: 18:1
Minority Enrollment: 20%
Overall Testing Rank
: Top 50%
Math Proficiency
: 40% (Top 50%)
Reading Proficiency
: 60% (Top 50%)
Science Proficiency
: 44% (Btm 50%)
Source: National Center for Education Statistics (NCES), WA Dept. of Education
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