Summary:
Zip code 48420 is home to just one high school, Clio Area High School, which serves grades 8 through 12 and enrolls 684 students in the Clio Area School District.
For parents considering this area, Clio Area High School stands out most for its exceptional graduation rate of 93.4% for the 2024-2025 school year—nearly 10 points higher than the state average of 84.0% and well above its own district’s rate of 82.4%. The dropout rate is equally impressive at just 2.4%, compared to 6.1% for the district and 7.1% statewide. The school also shines in content-heavy subjects: 43.5% of 11th graders are proficient in Science and 54.6% in Social Studies, both significantly outperforming state averages (35.2% and 43.2%, respectively). Chronic absenteeism is a positive story too, at 23.5%—lower than both the district (26.9%) and state (27.9%)—which suggests strong student engagement despite over half the student body (53.2%) being economically disadvantaged.
However, the school’s clear weakness is mathematics. Only 18.4% of 11th graders are proficient in SAT Math, far below the state average of 26.5%, and this deficiency persists across PSAT scores in 9th and 10th grades. This creates a “graduation paradox”: the school excels at keeping students on track to earn a diploma, but may not be fully preparing them for college-level math. The school’s state ranking has fluctuated—242nd in 2023-2024, dropping to 366th in 2024-2025, then rebounding to 299th (63rd percentile) for 2025-2026. With a relatively high student-to-teacher ratio of 23.7 and per-student spending of $14,933, a strategic focus on math instruction and potentially smaller class sizes could help close this gap. Overall, Clio Area High School is a resilient, high-graduating school that outperforms its district across nearly every metric, but families should be aware of the math proficiency challenge when evaluating academic readiness.
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