Chief Sealth International High School
🇺🇸 Official data · 2025Seattle, Washington 98126 · Seattle School District No. 1
#179 of 333 high schools in Washington
#7746 of 16,910 nationally
About Chief Sealth International High School
Chief Sealth International High School is a public high located in Seattle, in the Seattle School District No. 1 school district of Washington, United States. It caters for Grades 9–12. In 2025 it enrolled 1,184 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 52.4 out of 100, placing it in the top 50% of high schools in United States and 179th of 333 ranked high schools in Washington. Its strongest component is reading proficiency (72th percentile), and its weakest is students per teacher (22th percentile).
Other published figures: enrollment 1,184.
There are 113 schools in Seattle; Chief Sealth International High School ranks 80th of 110 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)41%
- Reading proficiency (30%)68%
- Community advantage (fewer free/reduced-price lunch) (25%)51.6%
- Students per teacher (15%)19.1
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Chief Sealth International High School by the official sources.
- Enrollment
- 1,184
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 51.6%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 19.1
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 68%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 41%
- Share of tested students proficient or above (all students, all grades).
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Schools near Chief Sealth International High School
Closest schools by straight-line distance, with their Success Index (US).
David T. Denny International Middle School
Seattle · Public middle · Grades 6–8
722 students · 75 m away
Roxhill Elementary School
Seattle · Public elementary · Grades PK–5
289 students · 739 m away
Sanislo Elementary School
Seattle · Public elementary · Grades K–5
145 students · 1.3 km away
Highland Park Elementary School
Seattle · Public elementary · Grades PK–5
300 students · 1.4 km away
West Seattle Elementary School
Seattle · Public elementary · Grades PK–5
376 students · 1.5 km away
Summit Public School: Atlas
Seattle · Charter high · Grades 6–12
566 students · 1.6 km away
Gatewood Elementary School
Seattle · Public elementary · Grades K–5
400 students · 2.0 km away
Louisa Boren STEM K-8
Seattle · Public elementary · Grades PK–8
437 students · 2.1 km away
Head Start
Seattle · Public other · Grades PK–PK
0 students · 2.2 km away
Arbor Heights Elementary School
Seattle · Public elementary · Grades PK–5
495 students · 2.4 km away
Similar schools
Public high schools in Washington with a comparable Enrollment.
Marysville Pilchuck High School
Marysville · Public high · Grades 9–12
1,182 students
Hudson's Bay High School
Vancouver · Public high · Grades 9–12
1,197 students
Lindbergh Senior High School
Renton · Public high · Grades 9–12
1,201 students
Bellingham High School
Bellingham · Public high · Grades 9–12
1,165 students
Olympic High School
Bremerton · Public high · Grades 9–12
1,162 students
Clover Park High School
Lakewood · Public high · Grades 9–12
1,161 students
Frequently asked questions
Is Chief Sealth International High School a good school?
Chief Sealth International High School has a Success Index (US) of 52.4 out of 100 (Top 50% of high schools in United States) and ranks #179 of 333 in Washington. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Chief Sealth International High School rank in Washington?
Chief Sealth International High School ranks #179 of 333 high schools in Washington and #7746 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Chief Sealth International High School?
Chief Sealth International High School had 1,184 students in 2025.
Is Chief Sealth International High School a elementary school or a high school?
Chief Sealth International High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Chief Sealth International High School?
There are 10 schools within 15 km of Chief Sealth International High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.