Seattle-Tacoma-Bellevue, WA · WA
Mercer Island School District — Decoded Rankings
6 of 6 schools ranked · Updated 2026-09-04
District profile
- Total enrollment
- 2,533
- Free/reduced lunch
- 4.8%
- Avg SES index
- 97.0
- State
- WA
Schools in Mercer Island School District
Elementary / Middle Schools (5 ranked)
| Rating | ||||||
|---|---|---|---|---|---|---|
| Island Park ElementaryNeighborhoodMercer Island School District | #8 | #42 (WA)#29 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| Lakeridge Elementary SchoolNeighborhoodMercer Island School District | #10 | #73 (WA)#42 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| West Mercer ElementaryNeighborhoodMercer Island School District | #21 | #106 (WA)#65 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| Islander Middle SchoolNeighborhoodMercer Island School District | #101 | #141 (WA)#83 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| Northwood Elementary SchoolNeighborhoodMercer Island School District | #90 | #185 (WA)#111 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High |
High Schools (1 ranked)
| Rating | ||||||
|---|---|---|---|---|---|---|
| Mercer Island High SchoolNeighborhoodMercer Island School District | #1 | #11 (WA)HS#5 (Seattle-Tacoma-Bellevue metro) | HS outcome | Medium |
Story type breakdown
- 0Outperforming Expectations
- 5Strong by Both Measures
- 0High Scores, Context Matters
- 0Typical Profile
- 0Lower by Both Measures
How this district compares
District-level averages relative to the Seattle-Tacoma-Bellevue, WA metro median.
| Measure | District avg | Metro median | Read |
|---|---|---|---|
| Avg achievement percentile (metro) | 94.0 | 50 | 44.0 points above the metro median |
| Avg decoded percentile (metro) | 90.4 | 50 | 40.4 points above the metro median |
| Avg rank shift (places gained after context) | -24.2 | 0 | Schools lose 24.2 places on average after context. |
Data & sources
- Assessment data
- 2022–23 school year
- NCES CCD vintage
- 2022
- Census ACS 5-year vintage
- 2020-2024
- Last updated
- September 4, 2026
- Methodology version
- 0.14.0
Source files (3)
- NCES CCD 2022 directory (Urban Institute) (accessed 2026-09-04)
- ACS 5-year 2020-2024 (accessed 2026-09-04)
- Washington OSPI 2022-23 school-level results (accessed 2026-09-04)
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