Summary:
ZIP code 45867 is served by a single rural school system — Riverdale Local — whose four schools all share one campus in Mount Blanchard and together enroll about 947 students from kindergarten through 12th grade. The buildings are Riverdale High School (grades 9–12, 321 students), Riverdale Middle School (6–8, 208), Riverdale Elementary School (3–5, 221) and a second Riverdale Elementary School (K–2, 197). The district rates 2 stars, 448th of 773 Ohio districts (42nd percentile), but that single rating masks large differences between buildings.
The 3–5 elementary is the steadiest performer, holding 3 stars for three straight years and beating the state average in 5 of 7 tested subjects in 2025–26, by roughly 4 points on average. Its signature is early math: 3rd grade math was 81% proficient against a state figure of 62.1%, and 4th grade math 84.4% versus 67.3%. The middle school swings the widest — 7th grade math (75.9% vs 48.6%) and its Algebra I cohort (73.3%) run far above state, while 8th grade math (29.1% vs 52%) and 8th grade science (40.8% vs 61.2%) fall well below. At the high school, American History and English II beat state and the graduation rate is 97%, but Geometry and Algebra I trail state in both years.
Chronic absenteeism climbs steadily with grade level: 7.5% at the 3–5 elementary, 8.5% at K–2, 14.1% at the middle school and 30.8% at the high school — nearly double the district rate of 16.2%. Class sizes grow the same way, from 15.7 to 21.4 students per teacher, so the high school carries the largest classes, the weakest math results and the highest absenteeism. The high school is also the only building reporting free/reduced lunch, at 99.07%. Keep in mind that the K–2 school has no state test data, spending figures date to 2018–19, and grade sizes are small, so year-to-year swings are directional rather than definitive.
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