Summary:
ZIP code 98597 has two high schools serving grades 9–12 in the Yelm area: Yelm High School 12 and Yelm Extension School, both part of the Yelm School District. Together, they serve 1,809 students, although the schools have very different sizes and educational profiles.
Yelm High School 12 is the area’s stronger overall performer and enrolls 1,693 students. Its statewide ranking improved from the 46th percentile in 2023–2024 to the 64th percentile in 2025–2026. The school’s 82.2% graduation rate was close to the state rate, and its 10.3% dropout rate was below the district average. English Language Arts is a clear strength, with 63.32% of students proficient in 2025–2026, while math is the main concern at 31.41%, below both district and state results. Science improved notably to 53.71%, slightly above the state rate. Families should also note the school’s lower student-teacher ratio of 24.6 and higher reported spending per student.
Yelm Extension School serves 116 students and appears to have a smaller, more specialized or alternative-school profile. It has improved in ranking, ELA, and science, but its outcomes remain considerably below those of the larger high school. Its graduation rate was 59.5%, while its dropout rate was 19.0%. ELA proficiency was 38.46% and science proficiency was 33.33% in 2025–2026; math was not reported because the state suppressed the figure for privacy, so it should not be interpreted as zero. The school also had a higher student-teacher ratio and free/reduced-price lunch rate. Because of its small enrollment, yearly percentages may fluctuate more. Overall, families seeking the strongest academic and graduation indicators will find them at Yelm High School 12, while Yelm Extension School may be relevant for students who need a smaller or alternative setting.
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