Foster Senior High School

Set in Tukwila, Washington, Foster Senior High School is a high-enrollment high school, part of Tukwila School District. It hosts 910 students across grades 9 through 12. By comparison, Washington's public schools average about 573 students each, so Foster Senior High School sits 59% above that benchmark.

Tukwila School District comprises 5 schools with combined enrollment of 2,886 students; Foster Senior High School is among them.

On demographics, Foster Senior High School reports that the largest single group is Hispanic at 37%, but no single group is in the majority. Other groups include 25% Black, 20% Asian, 8% White, 6% multiracial. By comparison, King County as a whole is about 11% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

Looking at school resources, On paper, Foster Senior High School has 38 full-time-equivalent teachers, translating to a class-load average of around 23.9:1. That figure is higher than the state norm's 21.6:1 average. An estimated 69% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. By comparison, King County runs at roughly 38%, so the school's eligibility rate is meaningfully above the surrounding baseline.

Adjusting for the school's free-and-reduced-lunch share, Foster Senior High School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 34.0%, the actual is 27.7%, a residual of -6.3 points.

Across the wider county, King County reports that median household earnings sit near $124,746, about 57% of the adult population holds a bachelor's degree or above, and roughly 5% of residents live below the federal poverty line. In all, King County runs 544 public schools (combined enrollment of about 278,492 students), of which Foster Senior High School is one.

Showalter Middle School is the nearest neighboring public school, about 0.2 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 9 schools in that immediate cluster with test data (this one included), Foster Senior High School ranks 4th on composite proficiency, above the local average of 27.3%.

Geographically, the school is in a suburban area.

Looking at the recent track record. Foster Senior High School's enrollment has stayed largely flat since 2018, when it stood at 924 (now 910). Over the same period, the Asian share contracted from 34% to 20%. Class-load math has rose: from 21.0:1 in 2018 to 23.9:1 in 2025.

On the community side, the feed for Foster Senior High School typically covers pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.