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Chief Sealth International High School

Public Grades 9-12
236th
SchoolDigger Rank ?
of 438 Washington High Schools
Better than 46% of Washington high schools
Summary

Chief Sealth International High School is a public high school serving grades 9-12 to about 1,184 students in the Seattle School District No. 1, a well-regarded district, though the school's own statewide ranking has seen some fluctuation in recent years.

The school presents a mixed academic picture with a significant strength in English Language Arts, where student proficiency exceeds the state average and is competitive with schools like Cleveland High School STEM. However, math proficiency is a major and persistent challenge, falling well below district and state averages and creating one of the largest gaps between subjects among nearby schools. Notably, Chief Sealth maintains strong graduation rates that are competitive with higher-performing schools. The school serves an economically diverse population and shows exceptional effectiveness with Special Education students, but has struggled with consistent results for other student groups, leading to year-to-year performance volatility.

With the highest per-student spending among nearby comprehensive high schools like West Seattle High School and Evergreen High School, there are questions about how resources are deployed. Compared to specialty options such as the exceptionally high-performing Raisbeck Aviation High School, Chief Sealth's international focus has not yet translated into balanced academic excellence. The key opportunities for improvement center on overhauling math instruction, applying successful strategies from its special education program more broadly, and stabilizing programs to achieve more consistent outcomes for all students.

1,184
Students ?
18.8
Student/teacher ratio ?
$23,948
Per pupil spending ?
51.6%
Free/discounted lunch ?
 2600 SW Thistle
       Seattle, WA  98126-3748

(206) 252-8550

District: Seattle School District No. 1


Feeder schools for Chief Sealth International High School:

Elementary:    Arbor Heights Elementary School
    Concord International School
    Highland Park Elementary School
    Roxhill Elementary School
    More...
Middle:    David T. Denny International Middle School
Racial breakdown:

White:
25.5%
Hispanic:
25.3%
African American:
23.1%
more
 See top rated Washington high schools

 Compare Chief Sealth International High School to nearby high schools!
At a glance
Ranking trend: Improving — 40th percentile in 2015 → 46th in 2025
Strengths
Ranking is trending up — up 6 percentile points since 2015
Worth a look
!Some student groups rank well below the school's overall statewide standing
!Math scores 16 pts below the Washington average
!Near the bottom of Seattle School District No. 1's ranking
Students meeting standards (2024-2025) ?
This school45%
District avg63%
Washington avg48%
236th of 438
Washington public high schools ?
Bottom 46%▲ up 6 pts since 2015
From bottom 40% (2015) to bottom 46% (2025)
See the entire ranking list of Washington High Schools →
SchoolDigger rating ?
12th of 15High Schools in the Seattle School District No. 1
45th of 247Seattle School District No. 1 among Washington districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankWashington percentileRating
202544.9236 of 43846.1%★★☆☆☆
202427.2331 of 43724.3%★☆☆☆☆
202334.8289 of 44234.6%★★☆☆☆
202238.3275 of 43436.6%★★☆☆☆
202125.8345 of 45524.2%★☆☆☆☆
201945.2239 of 41742.7%★★☆☆☆
201843.7206 of 31534.6%★★☆☆☆
201740.6201 of 30133.2%★★☆☆☆
201662.4118 of 30661.4%★★★☆☆
201541.4203 of 34140.5%★★☆☆☆
201350.4255 of 45443.8%★★☆☆☆
201249.9246 of 45045.3%★★☆☆☆
201148.6224 of 44049.1%★★☆☆☆
201041.0280 of 42333.8%★★☆☆☆
200940.0274 of 40231.8%★★☆☆☆
200846.9253 of 39636.1%★★☆☆☆
200720.2330 of 39917.3%★☆☆☆☆
200627.7309 of 39521.8%★☆☆☆☆
200521.9325 of 39417.5%★☆☆☆☆
200426.5299 of 39023.3%★☆☆☆☆

African American

YearAvg scoreStatewide rankWashington percentileRating
202527.265 of 8018.8%★☆☆☆☆
202424.454 of 7022.9%★☆☆☆☆
202339.850 of 7835.9%★★☆☆☆
202229.667 of 8924.7%★☆☆☆☆
202116.9103 of 1117.2%☆☆☆☆☆
201927.368 of 8620.9%★☆☆☆☆
201837.334 of 5437.0%★★☆☆☆

Asian

YearAvg scoreStatewide rankWashington percentileRating
202548.355 of 11953.8%★★★☆☆
202421.094 of 11316.8%★☆☆☆☆
202334.679 of 11833.1%★★☆☆☆
202227.393 of 12425.0%★☆☆☆☆
202126.5103 of 13624.3%★☆☆☆☆
201952.955 of 12154.5%★★★☆☆
201834.065 of 8725.3%★☆☆☆☆

English Language Learner

YearAvg scoreStatewide rankWashington percentileRating
202318.038 of 4413.6%★☆☆☆☆
201943.138 of 6944.9%★★☆☆☆

Female

YearAvg scoreStatewide rankWashington percentileRating
202537.9215 of 35038.6%★★☆☆☆
202434.2243 of 34730.0%★★☆☆☆
202344.0202 of 35743.4%★★☆☆☆
202238.4232 of 36837.0%★★☆☆☆
202130.9275 of 39029.5%★☆☆☆☆
201950.7183 of 35848.9%★★☆☆☆
201846.0154 of 24336.6%★★☆☆☆

Hispanic

YearAvg scoreStatewide rankWashington percentileRating
202523.7199 of 24920.1%★☆☆☆☆
202416.5225 of 2489.3%☆☆☆☆☆
202318.1226 of 2499.2%☆☆☆☆☆
202232.6181 of 26130.7%★★☆☆☆
202124.7229 of 27817.6%★☆☆☆☆
201948.1116 of 24151.9%★★★☆☆
201847.084 of 15646.2%★★☆☆☆

Homeless

YearAvg scoreStatewide rankWashington percentileRating
201915.539 of 439.3%★☆☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankWashington percentileRating
202524.4285 of 35519.7%★☆☆☆☆
202424.5285 of 35619.9%★☆☆☆☆
202326.3284 of 36221.5%★☆☆☆☆
202236.7237 of 37035.9%★★☆☆☆
202117.7362 of 3927.7%☆☆☆☆☆
201942.4206 of 34440.1%★★☆☆☆
201841.9155 of 22731.7%★★☆☆☆

Male

YearAvg scoreStatewide rankWashington percentileRating
202544.7196 of 35945.4%★★☆☆☆
202416.3319 of 36211.9%★☆☆☆☆
202322.1281 of 35821.5%★☆☆☆☆
202232.5255 of 36329.8%★★☆☆☆
202120.9328 of 39517.0%★☆☆☆☆
201938.5231 of 35534.9%★★☆☆☆
201834.9189 of 25425.6%★☆☆☆☆

Multi-racial

YearAvg scoreStatewide rankWashington percentileRating
202551.980 of 17052.9%★★★☆☆
202425.2127 of 16121.1%★☆☆☆☆
202355.266 of 16660.2%★★★☆☆
202247.893 of 17948.0%★★☆☆☆
202154.078 of 19560.0%★★★☆☆
201933.9114 of 16330.1%★★☆☆☆

Special Education

YearAvg scoreStatewide rankWashington percentileRating
202564.932 of 12774.8%★★★★☆
202236.781 of 13037.7%★★☆☆☆
202131.0144 of 21232.1%★★☆☆☆
201937.381 of 12836.7%★★☆☆☆
201842.583 of 13940.3%★★☆☆☆

White

YearAvg scoreStatewide rankWashington percentileRating
202568.0101 of 37372.9%★★★★☆
202435.1270 of 37427.8%★☆☆☆☆
202360.7134 of 37964.6%★★★☆☆
202258.2155 of 39060.3%★★★☆☆
202161.2133 of 41367.8%★★★☆☆
201959.5144 of 38262.3%★★★☆☆
201860.093 of 22258.1%★★★☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Special Education (2025)75th percentile+29 vs school
White (2025)73rd percentile+27 vs school
Asian (2025)54th percentile+8 vs school
Multi-racial (2025)53rd percentile+7 vs school
Male (2025)45th percentile~ school
Female (2025)39th percentile-8 vs school
Hispanic (2025)20th percentile-26 vs school
Low Socio Economic Status (2025)20th percentile-26 vs school
African American (2025)19th percentile-27 vs school
English Language Learner (2023)14th percentile-21 vs school
Homeless (2019)9th percentile-33 vs school
By subject vs Washington (2024-2025) ?
English Language Arts62%+9 vs state
Science47%~ state avg
Math26%-16 vs state

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Frequently Asked Questions about Chief Sealth International High School

Students at Chief Sealth International High School are 26% White, 25% Hispanic, 23% African American, 13% Asian, 10% Two or more races, 2% Pacific Islander.

In the 2024-25 school year, 1,184 students attended Chief Sealth International High School.

Chief Sealth International High School ranks 236th of 438 Washington high schools. SchoolDigger rates this school 2 stars out of 5.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Washington State Department of Health and the Washington Office of Superindentent of Public Instruction.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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