Arlington High School

Arlington High School, a sizable secondary school in Arlington, Washington, one of the schools within Arlington School District, teaches 1,650 students, covering grades 9 through 12. By comparison, Washington's public schools average about 573 students each, so Arlington High School sits 188% larger than that benchmark.

Arlington School District comprises 10 schools with combined enrollment of 5,588 students; Arlington High School is among them.

Demographically, Arlington High School lists that White students make up the majority at 67%. The remainder comes out to 20% Hispanic, 8% multiracial. That composition is broadly in line with Snohomish County as a whole.

Looking at the economic backdrop, Arlington High School records 71 full-time-equivalent teachers, putting the student-to-teacher ratio at about 23.2:1. Statewide, the average ratio sits near 21.6:1, putting Arlington High School higher than the state norm the norm. Roughly 37% of students at Arlington High School qualify for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.

With demographic context factored in, Arlington High School tracks the demographic baseline. The model predicts 55.4% given the school's FRL share; actual proficiency is 49.0%.

Around the school, census data for Snohomish County shows the typical household earns roughly $111,246 per year, 38% of adults hold a bachelor's degree or higher, and roughly 6% of residents live below the federal poverty line. Arlington High School is one of 227 public schools in Snohomish County (combined enrollment of about 118,688 students).

Pioneer Elementary is the nearest neighboring public school, about 0.3 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. On composite proficiency, Arlington High School comes 3rd of 7 in the immediate cluster, above the nearby-schools average of 44.7%.

Arlington High School operates from a commuter-belt location.

Over the past 7-year window. Looking back 7 years, enrollment at Arlington High School has edged up 3%, going from 1,604 students in 2018 to 1,650 in 2025. White enrollment moved from 79% to 67% across the same window. Class-load math has rose: from 21.6:1 in 2018 to 23.2:1 in 2025.

On this page, the feed for Arlington High School typically covers pickup logistics, teacher feedback, and after-school programs. The community welcomes input from current and former families.