Summary:
ZIP code 98935 has one listed high school: Mabton Junior Senior High, serving students in grades 7–12 within the Mabton School District. The school enrolls 359 students and has an 18.1-to-1 student-teacher ratio. Because it is the only high school in the ZIP code, there is no local school-to-school comparison; the most useful benchmarks are the school’s district and Washington averages.
Mabton Junior Senior High’s clearest strength is graduation: 91.0% of students graduated in 2024–2025, compared with 82.6% statewide, matching the rate for the Mabton School District. The school’s reported 7.6% dropout rate for 2023–2024 is also lower than the listed statewide rate of 9.8%, although the figures come from different school years. Academic test results are much weaker. In 2025–2026, 25.69% of students met the ELA standard, compared with 52.81% statewide; math proficiency was 11.19% versus 43.11%, and science proficiency was 16.00% versus 50.95%. Math appears to be the most urgent academic concern, while science was slightly stronger than the district result.
There are some positive signs: all-grade proficiency improved modestly from the prior year in ELA, math, and science, and the school’s ranking percentile rose from approximately 0% in 2022–2023 to 7% in 2025–2026. Within the school, 10th-grade ELA was comparatively strong at 40%, while 8th-grade ELA was 14.29% and 10th-grade math was 10.91%. More than nine in ten students qualify for free or reduced-price lunch, indicating substantial economic need and important context when evaluating results. Overall, families should expect a school with strong graduation outcomes and some recent improvement, but with significant opportunities to strengthen math, science, and broader academic proficiency.
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