Summary
Tualatin High School is a large public high school in Tualatin, Oregon, serving grades 9–12 in the Tigard-Tualatin School District 23J, with 1,687 students — one of the larger comprehensive high schools in the area.
The most important thing to know is that the school's results are mixed, and its state ranking has dropped over time. Its district ranks 24th of 141 districts in Oregon (83rd percentile, 4 stars), but Tualatin High School itself ranks 160th of 271 schools (41st percentile, 2 stars). In English language arts, Tualatin is at 44.9%, slightly above the state's 43.8% but below the district's 48.3%. Math is the clearest weak spot: 18.5% proficiency, compared with 37.3% in the district and 32.9% statewide — the lowest math score among nearby comprehensive high schools. Science is also below both district and state, at 24.5%. Historically, the school was a top performer, ranking in the 87th–95th percentile between 2014–15 and 2018–19.
Two numbers stand out in opposite directions. The graduation rate is a genuine strength at 90.2%, above the district (86.7%) and state (83.0%), and it has stayed above both for five years. At the same time, chronic absenteeism is 50.0% — far above the district and state, both around 33.5%, and the highest among area comprehensive high schools. Tigard High School, in the same district and with similar enrollment, spending ($19,221 vs. $19,213 per student), and student-teacher ratio, scores higher in every subject. Mountainside High School and Sherwood High School also outperform Tualatin in most categories while spending less. The share of students from low-income families has risen sharply, from 25.24% in 2022–23 to 58.15% in 2024–25. Results for low-income and gifted students are relatively stronger, while special education students rank lower. The clearest priorities are math and absenteeism.
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