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Mercer Island High School

Serves grades 9 - 12

Analytics built by:   Location, Inc.

Raw data sources:
  • Test Scores: Edfacts (U.S. Department of Education), State departments of education.
  • Expenditures: National Center for Education Statistics.
  • Educational Environment: American Community Survey (U.S. Census Bureau).
Date(s) & Update Frequency:
  • Test data: Reflects 2023 – 2024 school year.
  • Expenditures: 2022
  • Educational Environment: 2023 (latest available). Updated annually.
  • All data updated June 2025

Methodology:   Only NeighborhoodScout gives you nationally comparable school ranks based on test scores, so you can directly compare the quality of schools in any location. Read more

School Overview

Address
9100 Se 42nd
Mercer Island, WA 98040
Phone
(206) 236-3345
District
Mercer Island School District
County
KING COUNTY
Type of School
Regular elementary or secondary
Magnet School
No
Charter School
No
Students Enrolled
1465
Classroom Teachers
75

School Quality Ratings

School Quality Compared to Washington

10

(10 is best)

Better than 96.5% of all WA schools.

School Quality Compared to U.S.

10

(10 is best)

Mercer Island High School Test Scores (No Child Left Behind Tests)

Grade 10

100 80 60 40 20 0
79%
45%
82%
61%
75%
30%
    Proficiency in Reading and Math
    Proficiency in Reading
    Proficiency in Math
School
State

Class Size (number of students per classroom teacher)

25 20 15 10 5 0
20
18
18
16
    AVG FOR THIS SCHOOL
    AVG FOR DISTRICT
    AVG FOR STATE
    AVG FOR NATION
SCHOOL ENROLLMENT BY GRADE NUMBER OF STUDENTS PERCENTAGE
Grade 9 337 23.0%
Grade 10 357 24.4%
Grade 11 370 25.3%
Grade 12 401 27.4%
Total 1465 100%

School enrollment by group

Ethnic/Racial Groups This School This District This State
White (non-hispanic) 61.7% 57.8% 54.1%
Black 1.6% 1.2% 5.4%
Hispanic 7.6% 8.6% 27.7%
Asian Or Pacific Islander 28.7% 32.2% 9.7%
American Indian Or Native Of Alaska 0.4% 0.3% 3.0%
Economic Groups This School This District This State
Economically disadvantaged 7.2% 6.8% 49.5%
Free lunch eligible 7.2% 6.8% 41.7%
Reduced lunch eligible 0.0% 0.0% 7.8%
POPULATION DISTRICT FOR THIS SCHOOL STATE
POPULATION 25,282 7,812,880
POPULATION DENSITY (per sq. mile) 3,961.1 116
POPULATION DISTRIBUTION BY AGE DISTRICT FOR THIS SCHOOL STATE
4 YEARS OLD AND BELOW 3.9% 5.7%
5-19 YEARS OLD 20.5% 18.3%
20-44 YEARS OLD 24.2% 35.4%
45-64 YEARS OLD 30.5% 24.3%
65 OR OLDER 21.0% 16.3%
HOUSEHOLD CHARACTERISTICS DISTRICT FOR THIS SCHOOL STATE
Number Of Households 9,893 3,020,558
Single Parent Households With Children 3.5% 7.4%
Adults With At Least A High School Diploma 98.1% 92.2%
Adults With At Least A Bachelor's Degree 78.8% 38.8%
HOUSEHOLD INCOME DISTRIBUTION DISTRICT FOR THIS SCHOOL STATE
$150,000 or more 59.3% 28.4%
$100,000 - $149,999 12.4% 19.2%
$75,000 - $99,999 5.7% 12.6%
$50,000 - $74,999 7.7% 14.6%
$30,000 - $49,999 7.6% 11.2%
$15,000 - $29,999 4.2% 7.5%
$15,000 or less 3.1% 6.5%

Education Expenditures

For this District Per Student Total % of Total
Instructional Expenditures $9,882 $39,279,000 45.7%
Support Expenditures
Student $1,683 $6,690,000 7.8%
Staff $1,432 $5,694,000 6.6%
General Administration $276 $1,096,000 1.3%
School Administration $1,086 $4,318,000 5.0%
Operation $1,449 $5,760,000 6.7%
Transportation $600 $2,384,000 2.8%
Other $593 $2,359,000 2.7%
Total Support $7,120 $28,301,000 32.9%
Non-instructional Expenditures $4,627 $18,391,000 21.4%
Total Expenditures $21,628 $85,971,000 100.0%
For the State Per Student Total % of Total
Instructional Expenditures $9,304 $10,161,875,000 47.9%
Support Expenditures
Student $1,229 $1,341,985,000 6.3%
Staff $1,102 $1,203,327,000 5.7%
General Administration $151 $165,353,000 0.8%
School Administration $933 $1,019,191,000 4.8%
Operation $1,211 $1,322,944,000 6.2%
Transportation $451 $492,914,000 2.3%
Other $727 $794,490,000 3.7%
Total Support $5,805 $6,340,204,000 29.9%
Non-instructional Expenditures $4,311 $4,708,244,000 22.2%
Total Expenditures $19,419 $21,210,323,000 100.0%
For the Nation Per Student Total % of Total
Instructional Expenditures $8,505 $421,432,149,000 50.1%
Support Expenditures
Student $912 $45,189,184,320 5.4%
Staff $715 $35,442,027,000 4.2%
General Administration $282 $13,997,625,000 1.7%
School Administration $800 $39,661,338,000 4.7%
Operation $1,302 $64,530,934,000 7.7%
Transportation $501 $24,826,324,680 3.0%
Other $567 $28,090,428,000 3.3%
Total Support $5,081 $251,737,861,000 29.9%
Non-instructional Expenditures $3,383 $167,614,653,000 19.9%
Total Expenditures $16,969 $840,784,663,000 100.0%

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