Summary:
ZIP code 98576 has one high school, Rainier Senior High School, serving grades 9–12 in the Rainier School District. The school enrolls 283 students and has an 18.1-to-1 student-teacher ratio. Nearly half of students qualify for free or reduced-price lunch, providing important context about the economic needs within the school community. Since there is no other high school in the ZIP code, families are choosing among programs and outcomes within one school rather than comparing multiple local high schools.
Rainier Senior High School’s strongest recent results are in English Language Arts and science. In 2025–2026, 67.19% of students were proficient in ELA, compared with 50.49% in the district and 52.81% statewide. Science proficiency was 63.75%, above both the district’s 54.51% and Washington’s 50.95%; 11th-grade science performance was especially strong, exceeding the state by nearly 15 percentage points. Math is the clearest area needing attention: 36.36% of students were proficient, below the district’s 40.04% and the state’s 43.11%. Parents should also note that the school’s latest grade-specific 10th-grade math result was slightly above the state average, so performance can vary depending on the grades and students included.
The school’s statewide standing improved notably, moving from the 68th percentile and three stars in each of the two prior reported years to the 76th percentile and four stars in 2025–2026. Science improved by 11.29 percentage points year over year, while ELA changed little and math declined modestly. A reported 95% graduation rate in 2022–2023 matched the district rate and was encouraging, but newer school-level graduation and dropout figures were not provided. Overall, the available information describes a small high school with strong literacy and science outcomes, improving statewide recognition, and math achievement as the main priority for continued improvement.
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