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SCHOOL COMMUNITY·MERCER ISLAND SCHOOL DISTRICT·NCES 530498003566

Northwood Elementary School

4030 86th Ave SE, Mercer Island, WA 98040 · (253) 841-8740 · King County
GRADES PK–05ELEMENTARY21-SUBURBREGULAR SCHOOL398 STUDENTS
A
allk12 Grade
Scored higher than 85% of Washington public elementary schools
  • ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • B+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • C+Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Washington public elementary schools

Enrollment
398
Elementary
DISTRICT 399 · STATE 380
Student : Teacher
15.0:1
26 FTE teachers
DISTRICT 15.9:1 · STATE 17.3:1
Free / Reduced Lunch
10%
41 students
DISTRICT 6% · STATE 51%
Community
1
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Pre-K338%
Kindergarten6115%
Grade 15113%
Grade 28321%
Grade 35313%
Grade 45915%
Grade 55815%

This year's kindergarten class (61) is 5% larger than its 5th grade class (58).

Student demographics
67%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 66% · STATE 68% · US 70%
White
18346%
DISTRICT 48% · STATE 47% · US 43%
Hispanic
4010%
DISTRICT 7% · STATE 27% · US 30%
Black
21%
DISTRICT 1% · STATE 5% · US 15%
Asian
11629%
DISTRICT 28% · STATE 9% · US 6%
Two+
5313%
DISTRICT 14% · STATE 9% · US 5%
Pacific Islander
10%
DISTRICT 0% · STATE 2% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
20852%
Female
18747%

School pathway

Students here typically continue to
Northwood Elementary School→Islander Middle School→Mercer Island High School
Based on grade levels within Mercer Island School District. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
73.1%
WA avg 58.4% . -8.9pp since 2016
Math
75.1%
WA avg 51.2% . -6.4pp since 2016

What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 73 of every 100 students at this school read and write at grade level and about 75 of 100 do math at grade level. Across all Washington schools, those numbers are about 58 and 51. Reading and writing scores are down about 9 points since 2016, while math scores are down about 6 points.

Smarter Balanced + WCAS results by year

School yearEnglish Language ArtsMath
2024-2573.1%75.1%
2023-2482.9%82.3%
2022-2379.3%70.3%
2021-2276.1%73.3%
2018-1977.7%76.1%
2017-1880.3%78.6%
2016-1782.0%81.5%
% Met or Exceeded Standard, all students and all tested grades.
Source: Smarter Balanced + WCAS. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
79.0%
composite math + reading, all grades
Predicted
73.3%
based on WA schools with similar FRL share
Beats by
+5.8pp
above demographic expectation

What this means: About 79% of students here test proficient in math and reading, compared with the roughly 73% typical for Washington schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Washington's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Northwood Elementary School

Northwood Elementary School's state test result (79.0% proficient) is higher than 2 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Northwood Elementary School this school39810.3%79.0%
West Mercer Elementary
Mercer Island
4317.9%84.5%
Lakeridge Elementary School
Mercer Island
4013.5%87.3%
Westhill Elementary
Bothell
41916.9%60.8%
Laura Ingalls Wilder Elementary
Woodinville
3154.1%82.5%
Lockwood Elementary
Bothell
52516.6%77.8%
Matched among Washington elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Northwood Elementary School ranks

Among elementary schools
MeasureThis schoolIn WashingtonIn King County
State test proficiency
ranked highest first
79.0%#59 of 936#48 of 280
Math proficiency
ranked highest first
75.1%#83 of 1,103
▼ 48
#59 of 281
▼ 30
Reading proficiency
ranked highest first
73.1%#120 of 1,102
▼ 83
#83 of 280
▼ 55
3-year test score change
ranked biggest drop first
-0.6pp#349 of 928#111 of 274
Enrollment
ranked largest first
398#645 of 1,268#176 of 299
Students per teacher
ranked fewest first
15.0:1#342 of 1,085#80 of 280
Diversity index
ranked most diverse first
67.1%#354 of 1,088#175 of 281
Free and reduced lunch
ranked highest share first
10.3%#1,126 of 1,169#253 of 292
Enrollment change since 2017-18
ranked steepest decline first
-14.4%#449 of 778#143 of 220
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
398
-16 (-4%) vs 2020
Student : Teacher
15.0:1
was 14.8:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2539826.515.0:110% (41)
2023-243982515.9:110% (39)
2022-2340426.215.4:17% (29)
2020-214142814.8:14% (18)
2017-1846529.215.9:15% (24)
Source: NCES Common Core of Data. Rows are the federal collections on file for Northwood Elementary School.

Since 2017-18: students down 14% (465 to 398); teachers down 9% (29.2 to 26.5).

About Northwood Elementary School

Northwood Elementary School, a medium-sized elementary school, is located in Mercer Island, Washington. The school's enrollment of 398 students covers pre-K through 5.

Mercer Island School District has 3,993 students spread across 6 schools.

At Northwood Elementary School, the largest share of students is White, at 46%. The remaining shares are 29% Asian, 13% multiracial, and 10% Hispanic. King County as a whole is about 55% White, so the school's share is lower. Northwood Elementary School's diversity index is 67%, against a US figure of 70%.

Teacher staffing is 26.5 full-time equivalents, or about 15.0 students per teacher. On average, elementary schools in Washington have 17.3:1, compared with 15.0:1 here. About 10% of students, or 41, qualify for free or reduced-price lunch. It compares with 38% for public schools in King County.

Measured against Washington public elementary schools, Northwood Elementary School receives an A. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

The allk12 BeatsExpectations score for Northwood Elementary School is +5.8 points: 79.0% actual, 73.3% predicted.

Across King County, the median household income is $124,746, the share of adults with a bachelor's degree or higher is 57%, and about 5% of people live in poverty. In all, King County has 544 public schools and roughly 278,492 students.

The closest public school to Northwood Elementary School is Mercer Island High School, about 0.2 miles away. Counting only straight-line distance, at least 8 other public schools are within five miles. Its average proficiency rate of 79.0% is above the 75.4% average for nearby schools.

Northwood Elementary School is coded as Suburb: Large in federal locale data.

Northwood Elementary School's enrollment dropped from 414 in 2020-21 to 398 in 2024-25.

Posts about school events, clubs, and volunteer needs are welcome on this page. Reviews and ratings from people who know the school are welcome.

King County at a glance

View full county profile
Population
2,287,171
Census ACS
Median income
$124,746
Household, ACS
Bachelor's+
57%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
544
278,492 students

Quick facts

School name
Northwood Elementary School
District
Mercer Island School District
Address
4030 86th Ave SE, Mercer Island, WA 98040
Phone
(253) 841-8740
County
King County
Level
Elementary
Grade range
PK–05
Total enrollment
398
Teachers (FTE)
26
Student–teacher ratio
15.0:1
Free and reduced lunch
41 (10%)
Locale
21-Suburb: Large
NCES ID
530498003566
Charter school
No
Virtual school
No

Related schools

Other schools in Mercer Island School District
Other schools in Mercer Island
Other Northwood Elementary schools

24 other US public schools in 15 states are named Northwood Elementary. Northwood Elementary School is the 17th largest of the 25.

Nearby schools

Frequently asked questions

About Northwood Elementary School
What is the total enrollment at Northwood Elementary School?
Northwood Elementary School enrolls approximately 398 students in grades PK-05.
What grades does Northwood Elementary School serve?
Northwood Elementary School serves grades PK-05.
How many students per teacher at Northwood Elementary School?
Approximately 15.0:1 students per teacher at Northwood Elementary School.
How diverse is Northwood Elementary School?
Northwood Elementary School reports a student body of 46% White, 10% Hispanic, 1% Black, 29% Asian, 13% Two or more.
Who oversees Northwood Elementary School?
Northwood Elementary School is overseen by Mercer Island School District in King County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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