Seattle-Tacoma-Bellevue, WA · WA
Mercer Island School District — Decoded Rankings
6 of 6 schools ranked · Updated 2026-09-04
District profile
- Total enrollment
- 2,510
- Free/reduced lunch
- 6.2%
- Avg SES index
- 96.9
- State
- WA
Schools in Mercer Island School District
Elementary / Middle Schools (5 ranked)
| Rating | ||||||
|---|---|---|---|---|---|---|
| Island Park ElementaryNeighborhoodMercer Island School District | #7 | #9 (WA)plausibly #4–34#6 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| Lakeridge Elementary SchoolNeighborhoodMercer Island School District | #8 | #23 (WA)plausibly #12–52#15 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| Northwood Elementary SchoolNeighborhoodMercer Island School District | #54 | #50 (WA)plausibly #29–154#31 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| West Mercer ElementaryNeighborhoodMercer Island School District | #31 | #64 (WA)plausibly #37–167#39 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High | ||
| Islander Middle SchoolNeighborhoodMercer Island School District | #100 | #151 (WA)plausibly #100–275#92 (Seattle-Tacoma-Bellevue metro) | ★Strong by Both Measures | High |
High Schools (1 ranked)
| Rating | ||||||
|---|---|---|---|---|---|---|
| Mercer Island High SchoolNeighborhoodMercer Island School District | #1 | #13 (WA)HS#7 (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) | 94.7 | 50 | 44.7 points above the metro median |
| Avg decoded percentile (metro) | 94.7 | 50 | 44.7 points above the metro median |
| Avg rank shift (places gained after context) | 0.2 | 0 | Schools gain 0.2 places on average after context. |
Data & sources
- Assessment data
- 2023–24 school year
- NCES CCD vintage
- 2023
- Census ACS 5-year vintage
- 2020-2024
- Last updated
- September 4, 2026
- Methodology version
- 0.14.0
Source files (3)
- NCES CCD 2023 directory (Urban Institute) (accessed 2026-09-04)
- ACS 5-year 2020-2024 (accessed 2026-09-04)
- Washington OSPI 2023-24 school-level results (accessed 2026-09-04)
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