Grade Trends

Chief Sealth International High School

Grades 9–12 Public District: Seattle School District No. 1

2600 SW Thistle, Seattle, WA 98126 Map

Math (met standard)
28%
−7 state 35% · 2025-26
English (met standard)
59%
−6 state 64% · 2025-26
Science (met standard)
57%
+8 state 49% · 2025-26
Low income
52%
free or reduced-price lunch
Students
1,184
2024-25
Students per teacher
18.9
2024-25

Test score trends

Share of students who met or exceeded the state standard each year.

Latest results by grade

Grade Math English Science
Grade 10 28% state 35% · 2025-26 59% state 64% · 2025-26 —
Grade 11 — — 57% state 49% · 2025-26
All grades 28% state 35% · 2025-26 59% state 64% · 2025-26 57% state 49% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 28% state 35% 59% state 64% 57% state 49%
2024-25 26% state 34% 62% state 65% 47% state 51%
2023-24 23% state 33% 56% state 66% 30% state 50%
2022-23 20% state 33% 60% state 66% 42% state 51%
2021-22 25% state 35% 71% state 69% 35% state 54%
2018-19 41% state 43% 69% state 73% 39% state 50%
2017-18 37% state 43% 62% state 73% 50% state 46%

Graduation & college

4-year graduation rate
86%
state 83% · 2024-25

Graduation rate: students who earned a regular diploma within four years.

Students

Race and ethnicity, 2024-25

Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).

Nearby schools

Subject percentages show the share of students who met or exceeded the state standard.

Pick to compare
Summit Public School: Atlas
Grades 6–12 Charter · Summit Public School: Atlas
1.0 mi
40%
±0 vs state
48%
−5 vs state
45%
−4 vs state
4% Average of math, English and science: 48% in 2022-23 → 44% in 2025-26 43% 566 White 38%
Evergreen High School
Grades 9–12 · Highline School District
2.3 mi
14%
−22 vs state
45%
−20 vs state
19%
−30 vs state
3% Average of math, English and science: 29% in 2022-23 → 26% in 2025-26 75% 1,080 Hispanic 51%
Highline Public Schools Virtual Academy
Grades PK–12 Virtual · Highline School District
2.6 mi
16%
−24 vs state
40%
−14 vs state
35%
−14 vs state
5% Average of math, English and science: 25% in 2022-23 → 30% in 2025-26 65% 208 Hispanic 47%
Cleveland High School STEM
Grades 9–12 · Seattle School District No. 1
2.9 mi
49%
+13 vs state
78%
+14 vs state
49%
±0 vs state
6% Average of math, English and science: 53% in 2022-23 → 59% in 2025-26 50% 875 Asian 48%
Innovation Heights Academy
Grades 9–12 Alternative · Highline School District
3.0 mi —
25%
−39 vs state
9%
−41 vs state · 2023-24
6% Average of math, English and science: 31% in 2022-23 → 25% in 2025-26 80% 142 Hispanic 60%
Raisbeck Aviation High School
Grades 9–12 Alternative · Highline School District
3.1 mi
68%
+33 vs state
97%
+33 vs state
83%
+34 vs state
6% Average of math, English and science: 89% in 2022-23 → 83% in 2025-26 33% 400 White 36%
West Seattle High School
Grades 9–12 · Seattle School District No. 1
3.4 mi
63%
+28 vs state
88%
+24 vs state
57%
+9 vs state
Average of math, English and science: 69% in 2022-23 → 70% in 2025-26 18% 1,479 White 65%
Interagency Programs
Grades 6–12 Alternative · Seattle School District No. 1
3.9 mi
10%
−25 vs state
32%
−32 vs state
18%
−31 vs state
Average of math, English and science: 27% in 2022-23 → 25% in 2025-26 68% 211 Hispanic 31%
Private School Services
Grades PK–12 Special education · Seattle School District No. 1
3.9 mi
19%
43%
— 12% Average of math, English and science: 31% in 2018-19 → 43% in 2022-23 11% 184 White 53%
Rainier Valley Leadership Academy
Grades 6–12 Charter · Rainier Valley Leadership Academy
4.4 mi
10%
23%
−28 vs state
31%
−18 vs state
Average of math, English and science: 22% in 2022-23 → 21% in 2025-26 56% 121 Black 70%