Foster High School is a public high school located in Tukwila, Washington. It serves students from 9th grade to 12th grade. It is part of the Tukwila School District, one of the most diverse school districts in the nation.
Serving 910 students in grades 9-12, Foster Senior High School ranks in the bottom 50% of all schools in Washington for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 15-19% (which is lower than the Washington state average of 41%). The percentage of students achieving proficiency in reading/language arts is 55-59% (which is higher than the Washington state average of 53%).
The student-teacher ratio of 24:1 is higher than the Washington state level of 17:1.
Minority enrollment is 92% of the student body (majority Hispanic and Black), which is higher than the Washington state average of 53% (majority Hispanic and Asian).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 910 students
- Student-Teacher Ratio: 24:1
- Minority Enrollment: 92%
- Graduation Rate: 84% (Top 50% in WA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 15-19% (Btm 50%)
- Reading Proficiency: 55-59% (Top 50%)
- Science Proficiency: 30-34% (Btm 50%)
- Source: National Center for Education Statistics (NCES), WA Dept. of Education
Top Rankings
Foster Senior High School ranks among the top 20% of public schools in Washington for:
Category
Attribute
Diversity
Percent Eligible For Free Lunch
School Overview
Foster Senior High School's student population of 910 students has grown by 10% over five school years.
The teacher population of 38 teachers has declined by 9% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
910 students
Total Classroom Teachers
38 teachers
Year Founded
1915
Colors
White, Purple
School Calendar
Last Day of School
Fri. Jun 12, 2026
School Rankings
Foster Senior High School ranks within the bottom 50% of all 2,088 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of Foster Senior High School is 0.76, which is more 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
#1378 out of 2088 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
15-19%
41%
Reading/Language Arts Test Scores (% Proficient)
55-59%
53%
Science Test Scores (% Proficient)
30-34%
49%
Student-Teacher Ratio
24:1
17:1
American Indian
n/a
1%
Asian
20%
9%
Hispanic
37%
27%
Black
25%
5%
White
8%
47%
Hawaiian
4%
2%
Two or more races
6%
9%
All Ethnic Groups
Graduation Rate
84%
84%
Eligible for Free Lunch
56%
39%
Eligible for Reduced Lunch
12%
9%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WA Dept. of Education
School Notes
- School Mascot: Bulldog
Frequently Asked Questions
What is Foster Senior High School's ranking?
Foster Senior High School is ranked #1378 out of 2,088 schools, which ranks it among the bottom 50% of public schools in Washington.
What schools are Foster Senior High School often compared to?
Foster Senior High Schoolis often viewed alongside schools like Ballard High School, Highline High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 41% WA state average), while 55-59% of students have achieved reading proficiency (compared to the 53% WA state average).
What is the graduation rate of Foster Senior High School?
The graduation rate of Foster Senior High School is 84%, which is equal to the Washington state average of 84%.
How many students attend Foster Senior High School?
910 students attend Foster Senior High School.
What is the racial composition of the student body?
37% of Foster Senior High School students are Hispanic, 25% of students are Black, 20% of students are Asian, 8% of students are White, 6% of students are Two or more races, and 4% of students are Hawaiian.
What is the student-teacher ratio of Foster Senior High School?
Foster Senior High School has a student ration of 24:1, which is higher than the Washington state average of 17:1.
What grades does Foster Senior High School offer ?
Foster Senior High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Foster Senior High School part of?
Foster Senior High School is part of Tukwila School District.
School Reviews
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