Grade Trends

Mercer Island High School

Grades 9–12 Public District: Mercer Island School District

9100 SE 42nd, Mercer Island, WA 98040 Map

Math (met standard)
80%
+44 state 35% · 2025-26
English (met standard)
93%
+28 state 64% · 2025-26
Science (met standard)
89%
+40 state 49% · 2025-26
Low income
7%
free or reduced-price lunch
Students
1,439
2024-25
Students per teacher
18.8
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 80% state 35% · 2025-26 93% state 64% · 2025-26 —
Grade 11 — — 89% state 49% · 2025-26
All grades 80% state 35% · 2025-26 93% state 64% · 2025-26 89% state 49% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 80% state 35% 93% state 64% 89% state 49%
2024-25 81% state 34% 95% state 65% 93% state 51%
2023-24 87% state 33% 93% state 66% 89% state 50%
2022-23 81% state 33% 92% state 66% 89% state 51%
2021-22 82% state 35% 94% state 69% 83% state 54%
2018-19 90% state 43% 99% state 73% 85% state 50%
2017-18 86% state 43% 95% state 73% 87% state 46%

Graduation & college

4-year graduation rate
96%
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
Newport Senior High School
Grades 9–12 · Bellevue School District
2.2 mi
83%
+48 vs state
91%
+27 vs state
81%
+33 vs state
7% Average of math, English and science: 78% in 2022-23 → 85% in 2025-26 16% 1,850 Asian 61%
Bellevue High School
Grades 9–12 · Bellevue School District
2.4 mi
71%
+35 vs state
86%
+22 vs state
62%
+13 vs state
6% Average of math, English and science: 79% in 2022-23 → 73% in 2025-26 19% 1,683 Asian 41%
Rainier Valley Leadership Academy
Grades 6–12 Charter · Rainier Valley Leadership Academy
3.1 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%
International School
Grades 6–12 Alternative · Bellevue School District
3.2 mi
83%
+44 vs state
88%
+34 vs state
90%
+41 vs state
Average of math, English and science: 89% in 2022-23 → 87% in 2025-26 8% 600 Asian 60%
Bellevue Digital Discovery
Grades K–12 Virtual · Bellevue School District
3.3 mi
43%
+1 vs state
68%
+12 vs state
38%
−11 vs state
23% Average of math, English and science: 72% in 2022-23 → 49% in 2025-26 11% 229 White 34%
Franklin High School
Grades 9–12 · Seattle School District No. 1
3.4 mi
30%
−6 vs state
71%
+7 vs state
44%
−5 vs state
Average of math, English and science: 48% in 2022-23 → 48% in 2025-26 57% 1,277 Black 26%
Bellevue Big Picture School
Grades 6–12 Alternative · Bellevue School District
3.9 mi
46%
+7 vs state
59%
+8 vs state
57%
+9 vs state
4% Average of math, English and science: 58% in 2022-23 → 54% in 2025-26 25% 346 White 41%
Rainier Beach High School
Grades 9–12 · Seattle School District No. 1
3.9 mi
34%
−1 vs state
49%
−15 vs state
32%
−17 vs state
7% Average of math, English and science: 32% in 2022-23 → 39% in 2025-26 67% 854 Black 41%
Alan T. Sugiyama High School
Grades 9–12 Alternative · Seattle School District No. 1
4.0 mi —
23%
−50 vs state · 2017-18
— Not enough years of data 71% 48 Black 40%
Middle College High School
Grades 9–12 · Seattle School District No. 1
4.0 mi
33%
−2 vs state
67%
+2 vs state · 2024-25
55%
+4 vs state · 2018-19
5% Average of math, English and science: 38% in 2022-23 → 33% in 2025-26 47% 93 White 41%