Summary:
Rainier School District has one high school, Rainier Senior High School, serving grades 9–12 and 283 students in the small community of Rainier, Washington. Because it is the district’s only high school, there are no nearby district schools to compare directly. The school has a student-teacher ratio of 18.1 to 1, and about 49% of students qualify for free or reduced-price lunch. Reported per-student spending was $17,730 in 2023–24.
Rainier Senior High School has shown encouraging overall progress. Its ranking improved from 141st of 438 Washington high schools to 95th of 396, moving from the 68th to the 76th percentile and rising from a 3-star to a 4-star rating. Academically, English language arts is a consistent strength: 67.19% of students were proficient in 2025–26, compared with 50.49% across the district and 52.81% statewide. Science was another strong area, with 63.75% proficiency—well above both the district’s 54.51% and the state’s 50.95%. Science also improved by 11.29 percentage points from the previous year.
Math is the main area parents may want to monitor. Only 36.36% of students were proficient in 2025–26, below the district rate of 40.04% and the state rate of 43.11%; math also declined slightly from the prior year. The school’s reported 95% graduation rate for 2022–23 is especially positive, although the available state comparison is from a different year. Its reported dropout rate was 7.2% in 2021–22, also below the reported statewide rate of 9.8% from 2024–25, though those figures are not from the same period. Overall, the school offers strong ELA and science results, improving recognition, and promising graduation outcomes, with math achievement the clearest priority for improvement.
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