Arlington School District — Decoded Rankings

7 of 11 schools ranked · Updated 2026-05-29

District profile

Total enrollment: 3,645
Free/reduced lunch: —
Avg SES index: 52.0
State: WA

Schools in Arlington School District

Elementary / Middle Schools (6 ranked)

Schools sortable by achievement rank, decoded rank, rank shift, story type, and confidence.

Post Middle SchoolEnrollment unknownArlington School District	#483	#338	Typical Profile	High
Eagle Creek ElementaryEnrollment unknownArlington School District	#356	#377	Typical Profile	High
Kent Prairie ElementaryEnrollment unknownArlington School District	#366	#487	Typical Profile	High
Pioneer ElementaryEnrollment unknownArlington School District	#473	#514	Lower by Both Measures	High
Haller Middle SchoolEnrollment unknownArlington School District	#511	#546	Lower by Both Measures	High
Presidents ElementaryEnrollment unknownArlington School District	#422	#563	Typical Profile	Medium

High Schools (1 ranked)

Schools sortable by achievement rank, decoded rank, rank shift, story type, and confidence.

Arlington High SchoolEnrollment unknownArlington School District	#53	#47HS		HS outcome	HS pool

Story type breakdown

0Outperforming Expectations
0Strong by Both Measures
0High Scores, Context Matters
4Typical Profile
2Lower 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)	36.0	50	14.0 points below the metro median
Avg decoded percentile (metro)	42.1	50	7.9 points below the metro median
Avg rank shift (places gained after context)	-35.7	0	Schools lose 35.7 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: May 29, 2026
Methodology version: 0.2.0

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