Rainier High School, located in Rainier, Washington, United States, was established in 1909. As of the 2009–2010 school year, it provides instruction for approximately 300 students in grades 9–12 with a staff of about 20 full-time and part-time instructors.
Serving 283 students in grades 9-12, Rainier Senior High 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 40-49% (which is approximately equal to the Washington state average of 41%). The percentage of students achieving proficiency in reading/language arts is 60-69% (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 17:1.
Minority enrollment is 21% of the student body (majority Hispanic), which is lower than the Washington state average of 53% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 283 students
- Student-Teacher Ratio: 18:1
- Minority Enrollment: 21%
- Graduation Rate: ≥95% (Top 5% in WA)
- Overall Testing Rank: Top 50%
- Math Proficiency: 40-49% (Top 50%)
- Reading Proficiency: 60-69% (Top 30%)
- Science Proficiency: 50-59% (Top 50%)
- Source: National Center for Education Statistics (NCES), WA Dept. of Education
Top Rankings
Rainier Senior High School ranks among the top 20% of public schools in Washington for:
Category
Attribute
Graduation Rate
School Overview
Rainier Senior High School's student population of 283 students has grown by 16% over five school years.
The teacher population of 16 teachers has grown by 23% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
283 students
Total Classroom Teachers
16 teachers
Year Founded
1909
School Calendar
Last Day of School
Fri. Jun 12, 2026
School Rankings
Rainier Senior High 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 Rainier Senior High School is 0.36, 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
#652 out of 2088 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
40-49%
41%
Reading/Language Arts Test Scores (% Proficient)
60-69%
53%
Science Test Scores (% Proficient)
50-59%
49%
Student-Teacher Ratio
18:1
17:1
American Indian
1%
1%
Asian
1%
9%
Hispanic
11%
27%
Black
n/a
5%
White
79%
47%
Hawaiian
n/a
2%
Two or more races
8%
9%
All Ethnic Groups
Graduation Rate
≥95%
84%
Eligible for Free Lunch
37%
39%
Eligible for Reduced Lunch
13%
9%
School Statewide Testing
School District Name
Rainier School District
Source: National Center for Education Statistics (NCES), WA Dept. of Education
School Notes
- School Mascot: Mountaineers
Frequently Asked Questions
What is Rainier Senior High School's ranking?
Rainier Senior High School is ranked #652 out of 2,088 schools, which ranks it among the top 50% of public schools in Washington.
What schools are Rainier Senior High School often compared to?
Rainier Senior High Schoolis often viewed alongside schools like Rochester High School, Yelm High School 12 by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
40-49% of students have achieved math proficiency (compared to the 41% WA state average), while 60-69% of students have achieved reading proficiency (compared to the 53% WA state average).
What is the graduation rate of Rainier Senior High School?
The graduation rate of Rainier Senior High School is 95%, which is higher than the Washington state average of 84%.
How many students attend Rainier Senior High School?
283 students attend Rainier Senior High School.
What is the racial composition of the student body?
79% of Rainier Senior High School students are White, 11% of students are Hispanic, 8% of students are Two or more races, 1% of students are American Indian, and 1% of students are Asian.
What is the student-teacher ratio of Rainier Senior High School?
Rainier Senior High School has a student ration of 18:1, which is higher than the Washington state average of 17:1.
What grades does Rainier Senior High School offer ?
Rainier Senior High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Rainier Senior High School part of?
Rainier Senior High School is part of Rainier School District.
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