Serving 893 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 40%). 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 22:1 is higher than the Washington state level of 16:1.
Minority enrollment is 92% of the student body (majority Hispanic and Asian), which is higher than the Washington state average of 52% (majority Hispanic and Asian).
Quick Stats (2025)
Grades: 9-12
Enrollment: 893 students
Student:Teacher Ratio: 22:1
Minority Enrollment: 92%
Graduation Rate
: 85-89% (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
Foster Senior High School ranks within the bottom 50% of all 2,113 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of Foster Senior High School is 0.75, 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.
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 40% 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 85-89%, which is higher than the Washington state average of 84%.
How many students attend Foster Senior High School?
893 students attend Foster Senior High School.
What is the racial composition of the student body?
39% of Foster Senior High School students are Hispanic, 22% of students are Asian, 21% of students are Black, 8% of students are White, 6% of students are Two or more races, 3% of students are Hawaiian, and 1% of students are American Indian.
What is the student:teacher ratio of Foster Senior High School?
Foster Senior High School has a student ration of 22:1, which is higher than the Washington state average of 16:1.
What grades does Foster Senior High School offer ?
Foster Senior High School offers enrollment in grades 9-12 (offers virtual instruction).
What school district is Foster Senior High School part of?
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Quick Stats (2025)
Grades: 9-12
Enrollment: 893 students
Student:Teacher Ratio: 22:1
Minority Enrollment: 92%
Graduation Rate
: 85-89% (Top 50%)
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
