- Enrollment
- 1,439
- Students per teacher
- 19.4:1
- Resource Index
- 52/100
Elementary school (grades K-5) · Mercer Island, WA
Island Park Elementary
Federal NCES profile for Island Park Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 65/100.
2024-25 NCES dataElementary school (grades K-5)NCES 530498000758
👥 S:T ratio 37
🌟 Gifted program 70
📋 Attendance 89
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Island Park Elementary earns 65/100 on the Resource Investment Index, with class sizes near the Washington median.
- #1 of 3
- elementary schools in Mercer Island · Resource Index
- 65
- Resource Index · Higher
- 15.8:1
- students per teacher
- 1.3%
- free-lunch eligible
Island Park Elementary has class sizes near the Washington median. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Island Park Elementary ranks #1 of 3 elementary schools in Mercer Island, WA.
School address
District: Mercer Island School District · Washington
NCES ID 530498000758 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-19 students YoY
Island Park Elementary shrank from 380 students in 2022-23 to 361 in 2023-24 (-5.0%).
Teacher FTE held 23.1 → 22.8 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-19 students YoY 530498000758 · Mercer Island, WA Elementary · SMALL · TRAD
364 enr · 15.8:1 · 1.3% lunch · RII 65
Nearest enrollment peer: Mercer Island High School (1,439 students)
Island Park Elementary shrank from 380 students in 2022-23 to 361 in 2023-24 (-5.0%). Teacher FTE held 23.1 → 22.8 across the same CCD years. Read with this school → · District book → · Washington schools → · Find another →
Island Park Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Mercer Island
Mercer Island High School
1,439 students
- Islander Middl
Islander Middle School
960 students
- West Mercer El 431
West Mercer Elementary
431 students
- Lakeridge Elem 401
Lakeridge Elementary School
401 students
- Northwood Elem 398
Northwood Elementary School
398 students
- This school 364
Island Park Elementary
364 students
What this shows Island Park Elementary reports 364 students on the CCD universe file.
How Island Park Elementary compares
Island Park Elementary is a shrinking campus on CCD: ratios and free-lunch share vs Washington and U.S. means.
| Metric | This school | vs Washington | Washington avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.8:1 | ▼ 10% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 1.3% | ▼ 97% | 45.0% | 51.7% |
| Enrollment | 364 | top 54% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.8:1
Leaner classes than 40% of US schools, a middle-of-the-pack class size.
364
Bigger than 42% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
1.3%
free-lunch eligible
- 97% below the Washington average of 45.0%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
15.8:1
students per teacher
- 10% below state mean
Top 44% in Washington - lower ratio than 56% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
4.4%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$17,288
per pupil, district-wide
- below Washington avg of $20,912
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 3 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.8 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 55.9%
Asian 20.1%
Two or More 16.8%
Hispanic or Latino 6.9%
African American 0.3%
Largest group: White at 55.9% of enrollment.
Student-body diversity index 61.4/100
Simpson diversity index - at 61.4, Island Park Elementary is more mixed than the Washington school average of 53.3.
Programs
Gifted & talented Yes
District finance for Mercer Island School District reports $17,288 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Island Park Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mercer Island High School | Larger | Similar economic need | Higher S:T ratio |
| Islander Middle School | Larger | Similar economic need | Higher S:T ratio |
| West Mercer Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Lakeridge Elementary School | Similar size | Similar economic need | Higher S:T ratio |
| Northwood Elementary School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Island Park Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 960
- Students per teacher
- 20.9:1
- Resource Index
- 51/100
- Enrollment
- 431
- Students per teacher
- 18.7:1
- Resource Index
- 62/100
- Enrollment
- 401
- Students per teacher
- 19.1:1
- Resource Index
- 62/100
- Enrollment
- 398
- Students per teacher
- 15.3:1
- Resource Index
- 66/100
Similar elementary schools in Mercer Island
2 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~364 students)
Frequently asked questions about Island Park Elementary
How many students attend Island Park Elementary?
Island Park Elementary has 364 students enrolled. It is an elementary school in Mercer Island, WA. CCD year-over-year: 380 (2022-23) → 361 (2023-24), down 19.
What is the student-teacher ratio at Island Park Elementary?
The student-teacher ratio at Island Park Elementary is 15.8:1, which is 10% lower than the Washington average of 17.6:1 and 1% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Island Park Elementary?
1.3% of students at Island Park Elementary are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Island Park Elementary?
The largest demographic group at Island Park Elementary is White at 55.9% of enrollment, in Mercer Island, WA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 61.4/100.
What is the Resource Investment Index for Island Park Elementary?
Island Park Elementary has a Resource Investment Index of 65/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Island Park Elementary rank among elementary schools in Mercer Island?
By Resource Investment Index, Island Park Elementary ranks #1 of 3 elementary schools in Mercer Island, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Mercer Island on the city page.
What other schools are in Mercer Island School District?
Besides Island Park Elementary, Mercer Island School District also operates Mercer Island High School (1,439 students), Islander Middle School (960 students), and West Mercer Elementary (431 students). See the Mercer Island School District district page for the complete list.