Average
#1301 of 2,225 schools in WA
Chief Sealth International High School
High School · Seattle School District No. 1
2600 SW Thistle, Seattle, WA 98126
Enrollment
1,201
Student-Teacher
18.2:1
Score
6.0
Grades
9th – 12th
Enrollment
1,201
Student-Teacher
18.2:1
Score
6.0
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Seattle
#72 of 89
public schools
Washington high schools
#230 of 476
In district
#86 of 106
Seattle School District No. 1
School environment
7.0 / 10
Strong
About Chief Sealth International High School
Chief Sealth International High School serves 1,201 students in grades 9-12 in Seattle's West Seattle area. With 66 full-time equivalent teachers, the school maintains an 18.2:1 student-teacher ratio, providing a solid foundation for personalized attention in this sizable high school environment. The school demonstrates strong academic performance, earning a 7.1 out of 10 rating from MySchoolScout and ranking #416 out of 2,261 Washington high schools, placing it in the 82nd percentile statewide.
Students show particularly solid achievement in English Language Arts and Reading, with 72% scoring proficient or above across grade levels. The school's academic score of 8.4 out of 10 reflects its commitment to educational excellence. Located in the 98126 ZIP code area, Chief Sealth International High School sits in an economically stable community where the median household income reaches $108,072 and median home values are $698,800.
The neighborhood reflects an educated population, with 61% of residents holding bachelor's degrees or higher, while maintaining a relatively low poverty rate of 9.0%. The school operates within Seattle's large urban environment, offering students the advantages and opportunities that come with city-based education.
Score Breakdown
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Chief Sealth International High School — Students at Chief Sealth International High School score 32% proficient, which is below what's typical for similar communities (expected: 42%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
55.9%
Students qualifying for federal meal assistance
Test Scores WA SBA (2023-24)
Based on 9 test records from WA state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 2.7/10.
How Chief Sealth International High School Compares
See how Chief Sealth International High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2020-21 · Source: CRDC via Urban Institute · Learn more
Performance Trends
Math proficiency has declined from 41% (2019) to 18.1% (2024). Reading/ELA proficiency has declined from 68% (2019) to 45.3% (2024).
Location
2600 SW Thistle, Seattle, WA 98126
Nearby Alternatives
Families considering Chief Sealth International High School may also want to explore other high schools in the area. West Seattle Elementary School (rated 9.0/10, 0.9 miles away), which scores notably higher. Another option is Sanislo Elementary School (rated 8.5/10, 0.8 miles away), which scores notably higher. Additionally, Highland Park Elementary School (rated 8.4/10, 0.9 miles away), which scores notably higher. For more schools in Seattle, see our Seattle schools guide .
Nearby Schools
20 within 2.0 mi| School | Distance | Rating |
|---|---|---|
| David T. Denny International Middle School Seattle | 0.0 mi | 5.8 |
| Roxhill Elementary School Seattle | 0.5 mi | 5.8 |
| Bridges Transition Seattle | 0.8 mi | 4.1 |
| Sanislo Elementary School Seattle | 0.8 mi | 8.5 |
| THE COMMUNITY OF WEST SEATTLE Seattle | 0.8 mi | — |
| OUR LADY OF GUADALUPE SCHOOL Seattle | 0.8 mi | 7.3 |
| West Seattle Elementary School Seattle | 0.9 mi | 9.0 |
| EXPLORER WEST MIDDLE SCHOOL Seattle | 1.1 mi | 7.4 |
| Summit Public School: Atlas Seattle | 1.0 mi | 5.7 |
| Highland Park Elementary School Seattle | 0.9 mi | 8.4 |
| THE BRIDGE SCHOOL Seattle | 1.3 mi | 5.2 |
| Louisa Boren STEM K-8 Seattle | 1.3 mi | 4.6 |
| TAPROOT SCHOOL Seattle | 1.1 mi | — |
| Arbor Heights Elementary School Seattle | 1.5 mi | 8.0 |
| Gatewood Elementary School Seattle | 1.3 mi | 7.0 |
| Fairmount Park Elementary School Seattle | 1.7 mi | 7.5 |
| White Center Heights Elementary Seattle | 1.5 mi | 7.5 |
| Mount View Elementary Seattle | 1.8 mi | 7.4 |
| ONE SCHOOL GLOBAL NORTH AMERICA SEATTLE CAMPUS Seattle | 1.4 mi | — |
| WEST SEATTLE MONTESSORI Seattle | 2.0 mi | 6.2 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 98126 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$114,030
Median Home Value
$751,900
Median Rent
$1,708/mo
Population
22,433
College Educated
59.8%
Homeownership
60.4%
Avg Commute
29.6 min
Poverty Rate
9.2%
Median Age
38.3
Community Profile
The community surrounding Chief Sealth International High School has a median household income of $114,030. It is a well-educated community where 60% of adults hold a bachelor's degree or higher. The median home value in the area is $751,900, with a median rent of $1,708/month. The local poverty rate of 9.2% is relatively low. The average commute for residents is 30 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Fort Vancouver High School Vancouver, WA | 6.0 |
| North Kitsap High School Poulsbo, WA | 6.0 |
| Rogers High School Spokane, WA | 6.0 |
| Wahluke High School Mattawa, WA | 6.0 |
| Yelm High School 12 Yelm, WA | 6.0 |
| Evergreen High School Seattle, WA | 5.9 |
Frequently Asked Questions
Common questions about Chief Sealth International High School
What grades does Chief Sealth International High School serve?
Chief Sealth International High School serves students in grades 9th through 12th.
How many students attend Chief Sealth International High School?
Chief Sealth International High School has an enrollment of approximately 1,201 students.
What is the student-teacher ratio at Chief Sealth International High School?
The student-teacher ratio at Chief Sealth International High School is 18.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Chief Sealth International High School rank in WA?
Chief Sealth International High School is ranked #1301 out of 2,225 schools in WA.
What is Chief Sealth International High School's MySchoolScout rating?
Chief Sealth International High School has a composite rating of 6.0 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Chief Sealth International High School?
Based on the most recent state assessment data, Chief Sealth International High School has 25.7% math proficiency and 57.7% reading/ELA proficiency.
Is Chief Sealth International High School a charter school?
No, Chief Sealth International High School is not a charter school. It is a traditional public school operated by the local school district.
Is Chief Sealth International High School a Title I school?
No, Chief Sealth International High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Chief Sealth International High School?
55.9% of students at Chief Sealth International High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
- Walk Score
- 68 Somewhat Walkable
- Transit Score
- 58 Good Transit
- Bike Score
- 65 Bikeable
- City Safety
- High (5,803/100K)
Powered by 
FBI UCR 2024. City-level (Seattle). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,201
- Student-Teacher Ratio
- 18.2:1
- Teachers (FTE)
- 66
- Free/Reduced Lunch
- 55.9%
- Type
- regular
- Setting
- Large City
- County
- King County
- Phone
- (206) 252-8550
- Data Year
- 2023–2024
Resources & Links
District
Seattle School District No. 1- District Enrollment
- 50,770
- Schools in District
- 109
- Per-Pupil Spending
- $21,806
- District Rank
- #86 of 106
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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