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Public school district · Suburb: Mid-size
Washington · Snohomish County

Arlington School District

5,588 students · 11 schools · 19.0:1 ratio · grades PreK–12 · #56 of 324 in Washington

Students
5,588
Schools
11
Teachers (FTE)
294
Student–Teacher
19.0:1
County
Snohomish
Grades
PreK–12
OverviewEnrollmentDemographicsStaffingFundingPerformanceAccreditationCompareFull data
Overview

About Arlington School District

Arlington School District is a public school system serving Snohomish County, Washington, based in Arlington. It serves 5,588 students across 11 schools spanning PreK–12, and is classified as a suburb: mid-size district. By enrollment it is the #56 largest of Washington’s 324 school systems.

Phone3606186203
Address315 N French Ave, Arlington, WA 98223
CountySnohomish County
Enrollment & schools

Size and structure

Arlington School District enrolls 5,588 students in 11 schools — an average of about 508 students per school. It serves grades PreK–12 and ranks #56 of 324 statewide by enrollment.

Students
5,588
#56 of 324 in Washington
Schools
11
~508 students each
Grade span
PreK–12
Suburb: Mid-size
Students & demographics

Who the district serves

Student race and ethnicity in Arlington School District, from the NCES Common Core of Data (5,588 students reported):

White
69%
Black
1%
Hispanic
19%
Asian
2%
Two or more
8%
Amer. Indian
1%
Pacific Isl.
0%

For economically-disadvantaged, English-learner, and special-education shares, plus school-by-school detail, see the federal sources in the full-data section.

Staffing & support

Teachers & staff

Arlington School District employs about 294 full-time-equivalent teachers for a student–teacher ratio of 19.0:1 — above the Washington average of about 17.9:1. Total district staff is roughly 570.

Student–teacher ratio
19.0:1
state avg ~17.9:1
Teachers (FTE)
294
classroom teachers
Total staff
570
all district employees

Counselor and librarian/media counts are not published at the district level in the current NCES release; see the federal full-data links for staffing detail.

Funding

How Washington funds schools

Washington funds basic education — its constitutional “paramount duty” — through the Prototypical School Funding Model, which estimates the staff, materials and resources a hypothetical school of a given size needs, then allocates to each district by its actual enrollment against those funded ratios. Rebuilt after the McCleary ruling, the model is topped up by a capped local enrichment levy and by state Local Effort Assistance for property-poor districts.

District-level per-pupil spending and the local/state/federal revenue split for Arlington School District are published in the federal school-finance files — see the full-data links below for the current figures.

Accountability

Report card & state results

Washington publishes the Washington State Report Card, reporting assessment results, graduation, growth, discipline and per-pupil finances, with schools identified for support through the Washington School Improvement Framework. Look up Arlington School District on the Washington State Report Card.

Accreditation

Accreditation status

Washington does not require accreditation of its public districts; the State Board of Education approves schools against basic-education standards, while accreditation is voluntary through Cognia or an Educational Service District. Look up Arlington School District in the free Cognia registry.

How it compares

Arlington School District vs. Washington

Enrollment rank
#56
of 324 districts
Ratio
19.0:1
state avg ~17.9:1
Locale
Suburb: Mid-size
Snohomish County

See every Washington district side by side in the Washington directory.

Go deeper

Look up Arlington School District’s full data

These official sources carry the district-level detail — finances, discipline, equity, test scores, boundaries. Direct links for this district (via its NCES ID):

Data & sources

About this data

Enrollment, demographics, staffing, locale and contact details reflect the NCES Common Core of Data (2024–25); funding context from the Washington Legislature (the Prototypical School Funding Model) and NEA Rankings & Estimates 2026. Figures are the latest available and may lag the current school year. This page is informational, not an official district record, and not affiliated with or endorsed by Arlington School District. NCES District ID (LEAID): 5300240. Confirm current details with the district and the Office of Superintendent of Public Instruction.