Chief Sealth International High School

Chief Sealth International High School is a heavily attended four-year high school in SEATTLE, Washington, part of Seattle School District No. 1. The school serves 1,184 students in grades 9 through 12. Enrollment runs roughly 107% larger than the state mean of about 573.

Chief Sealth International High School is one of 107 schools operated by Seattle School District No. 1, a district that caters to 50,773 students overall.

Looking at the student body, Chief Sealth International High School records that 26% of students identify as White, with the remaining enrollment distributed across several groups; the rest consists of 25% Hispanic, 23% Black, 13% Asian, 10% multiracial. That is considerably less White than the county at large, where the share is closer to 55%.

In terms of school funding signals, On paper, Chief Sealth International High School has 63 full-time-equivalent teachers, translating to a class-load average of around 18.9:1. The state averages around 21.6:1, so this campus is tighter than the state norm typical. An estimated 52% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. That share is above King County's rate of about 38%.

Adjusting for the school's free-and-reduced-lunch share, Chief Sealth International High School is in the bottom 10% of Washington public schools. The BeatsExpectations model predicts schools with this FRL share to land around 45.6%; Chief Sealth International High School posts 31.6%, -14.0 points below that line.

In the broader community, community-level numbers for King County indicate the typical household earns roughly $124,746 per year, 57% of adults hold a bachelor's degree or higher, and roughly 5% of residents live below the federal poverty line. Across King County's 544 public schools (combined enrollment of about 278,492 students), Chief Sealth International High School is one campus in the mix.

The closest other public school is David T. Denny International Middle School, roughly 0.0 miles away. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Chief Sealth International High School at 7th of 8; the average score across the group is 42.3%.

The school occupies a metropolitan site.

Trend over the last 7 years. Looking back 7 years, enrollment at Chief Sealth International High School has climbed 14%, going from 1,039 students in 2018 to 1,184 in 2025.

On allk12, recent activity here tends to focus on open house dates, ride-share offers, and field-trip permission slips. Posting is open to anyone connected to the school.