Class Size Information

  • As part of our commitment to communication and transparency in the district, we annually publicize information regarding class sizes in the Mercer Island School District.

    The elementary class size ratio reflects the average class size by grade level (average class size student ratio to 1 teacher), as delineated below: 

    Elementary Class Sizes (Headcount as of 10/1/16)

    KindergartenGolden Island Park Elementary

    17.0 to 1 – Kindergarten

    23.3 to 1 – 1st Grade

    22.3 to 1 – 2nd Grade

    21.7 to 1 – 3rd Grade

    22.3 to 1 – 4th Grade

    22.7 to 1 – 5th Grade

    Lakeridge Elementary

    17.7 to 1 – Kindergarten

    23.0 to 1 – 1st Grade

    23.0 to 1 – 2nd Grade

    23.1 to 1 – 3rd Grade

    24.5 to 1 – 4th Grade

    24.7 to 1 – 5th Grade

    Northwood Elementary

    21.7 to 1 – Kindergarten

    21.3 to 1 – 1st Grade

    24.1 to 1 – 2nd Grade

    24.2 to 1 – 3rd Grade

    23.3 to 1 – 4th Grade

    23.1 to 1 – 5th Grade

    West Mercer Elementary

    17.0 to 1 – Kindergarten

    17.7 to 1 – 1st Grade

    22.3 to 1 – 2nd Grade

    26.3 to 1 – 3rd Grade

    26.0 to 1 – 4th Grade

    25.3 to 1 – 5th Grade

    The secondary class size ratio reflects the average class size by subject area (average class size student ratio to 1 teacher), as delineated below:

    Islander Middle School Average Class Sizes (10/1/16)

    33.8 to 1 – Music

    27.1 to 1 – PE/Health

    27.1 to 1 – Math/Science

    26.4 to 1 – Language Arts/Social Studies

    04.6 to 1 – Special Programs (Special Ed, ELL)
    26.0 to 1 – World Language 

    Mercer Island High School Average Class Sizes (10/1/16)

    34.7 to 1 – Music

    17.7 to 1 – English/Social Studies

    21.3 to 1 – Math/Science

    14.1 to 1 – World Languages
    07.7 to 1 – Special Programs (Special Ed, ELL)
    24.3 to 1 – PE/Health
    16.9 to 1 – Career Education