Summary
William Mason High School is a very large suburban public high school serving grades 9–12 in Mason, Ohio, part of the Mason City school district. With 3,435 students, it is by far the largest high school in its area. In 2025–2026 it ranked 45th of 795 Ohio high schools — the 94th percentile — and earned 5 stars. Its district ranked 37th of 773 districts statewide, at the 95th percentile with 5 stars. The school has earned 5 stars in every listed year, with percentile ranks ranging from the 92nd to the 98th, and graduation rates have stayed above 97% since 2021–2022.
Among nearby comprehensive high schools, William Mason posted the strongest 2025–2026 state rank, ahead of Loveland High School (56th), Sycamore High School (94th), Lakota East High School (97th), Kings High School (133rd), and Lakota West High School (185th). Its 98.2% graduation rate is the highest of that group. Test scores beat the state in every reported subject, with the largest margins in Geometry (+40.1 points), Biology (+25.7), English II (+24.6), and Algebra I (+24.2). Math and science are the clearest differentiators: the school led nearby comprehensive peers in Biology, Geometry, and Algebra I, while its social studies and English II scores were strong but not always the top nearby result. Chronic absenteeism, at 18.2%, is above the district's 11.6% and higher than Sycamore and Loveland, though lower than Lakota East, Kings, and Lakota West.
Subgroup results are strong overall but uneven: African American students ranked in the 97th percentile, male students the 95th, and Special Education students the 92nd, up from 81st the prior year. Relative gaps appear for Low Socio Economic Status students (78th percentile), Asian students (77th), and English Language Learner students (81st). The school achieves these results at scale — 3,435 students, a 24.5 student-teacher ratio, and mid-range historical spending of $10,080 per student in 2018–2019 — yet it outranks Sycamore, which has a lower student-teacher ratio and higher spending. Families should note that the 2025–2026 rank is a rebound from 72nd the prior year, though still below its 2016–2017 peak of 16th.
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