Vashon Island School District — Decoded Rankings

3 of 5 schools ranked · Updated 2026-09-04

District profile

Total enrollment: 839
Free/reduced lunch: 30.1%
Avg SES index: 62.1
State: WA

Schools in Vashon Island School District

Elementary / Middle Schools (2 ranked)

Schools sortable by achievement rank, decoded rank, rank shift, story type, and confidence.
	Rating
McMurray Middle SchoolNeighborhoodVashon Island School District		#251	#207 (WA)plausibly #146–391#129 (Seattle-Tacoma-Bellevue metro)		★Strong by Both Measures	High
Chautauqua ElementaryNeighborhoodVashon Island School District		#638	#645 (WA)plausibly #322–961#319 (Seattle-Tacoma-Bellevue metro)		Typical Profile	Medium

High Schools (1 ranked)

Schools sortable by achievement rank, decoded rank, rank shift, story type, and confidence.
	Rating
Vashon Island High SchoolNeighborhoodVashon Island School District		#5	#6 (WA)HS#3 (Seattle-Tacoma-Bellevue metro)		HS outcome	High

Story type breakdown

0Outperforming Expectations
1Strong by Both Measures
0High Scores, Context Matters
1Typical 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)	58.3	50	8.3 points above the metro median
Avg decoded percentile (metro)	67.1	50	17.1 points above the metro median
Avg rank shift (places gained after context)	60.0	0	Schools gain 60.0 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)

SchoolDecoder publishes context-adjusted residuals, not causal estimates. Decoded Rank is one signal — not a verdict on teaching quality. Read about limitations →