Mercer Island High School (Mercer Island School District SCH DIST.), Washington - School Profile in 2023-2024 School Year

Updated on August 8, 2025.

Mercer Island High School is a High in Mercer Island, WA. It currently serves 1465 students (grades 09-12). The school is part of the Mercer Island School District School District.

Below, we provide details about the school including the population per grade, the racial demography of the student population, the racial demography of the student population per gender/sex, and the racial demography per grade level.

You can see similar information for other schools in Mercer Island School District School District and all schools in Washington.

Other Details

School Type: Regular School

School Level: High

Number of Students:1465

Number of Teachers: 75

Student/Teacher Ratio: 19.63

Location Info

Location: 9100 SE 42nd, Mercer Island, WA 98040

Mailing Address: 9100 SE 42nd, Mercer Island, WA 98040-4199

Phone: (206)236-3345

Website:

Data Source: NCES.

Student Population Per Grade

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Grade	Population
Grade 10	357
Grade 11	370
Grade 12	401
Grade 9	337

Gender/Sex of Mercer Island High School Student Population

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Gender	Population	Percent of Population (%)
Male	790	53.93
Female	662	45.19

Race/Ethnicity Demography of Mercer Island High School Student Population

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Race/Ethnicity	Population	Percent of Population (%)
American Indian or Alaska Native	1	0.07
Asian	363	24.78
Black or African American	20	1.37
Hispanic/Latino	96	6.55
Native Hawaiian or Other Pacific Islander	4	0.27
Two or more races	188	12.83
White	780	53.24

Male - Race/Ethnicity Demography of Student Population

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Race/Ethnicity	Population	Percent of Population (%)
American Indian or Alaska Native	1	0.13
Asian	188	23.80
Black or African American	7	0.89
Hispanic/Latino	55	6.96
Native Hawaiian or Other Pacific Islander	3	0.38
Two or more races	99	12.53
White	437	55.32

Female - Race/Ethnicity Demography of Student Population

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Race/Ethnicity	Population	Percent of Population (%)
Asian	175	26.44
Black or African American	13	1.96
Hispanic/Latino	41	6.19
Native Hawaiian or Other Pacific Islander	1	0.15
Two or more races	89	13.44
White	343	51.81

Race Demography Per Grade

The tables below shows the Race/Ethnicity of the student population per grade.

Grade 10 - Race/Ethnicity of Both Genders

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Race/Ethnicity	Population	Percent of Population (%)
Asian	92	25.77
Black or African American	5	1.40
Hispanic/Latino	21	5.88
Two or more races	41	11.49
White	189	52.94

Grade 11 - Race/Ethnicity of Both Genders

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Race/Ethnicity	Population	Percent of Population (%)
Asian	87	23.51
Black or African American	5	1.35
Hispanic/Latino	26	7.03
Native Hawaiian or Other Pacific Islander	2	0.54
Two or more races	45	12.16
White	204	55.14

Grade 12 - Race/Ethnicity of Both Genders

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Race/Ethnicity	Population	Percent of Population (%)
Asian	100	24.94
Black or African American	5	1.25
Hispanic/Latino	26	6.48
Two or more races	43	10.72
White	226	56.36

Grade 9 - Race/Ethnicity of Both Genders

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Race/Ethnicity	Population	Percent of Population (%)
American Indian or Alaska Native	1	0.30
Asian	84	24.93
Black or African American	5	1.48
Hispanic/Latino	23	6.83
Native Hawaiian or Other Pacific Islander	2	0.59
Two or more races	59	17.51
White	161	47.77