About Miami University. Miami University in Oxford, OH reports an overall acceptance rate of 75.0%, an early-round acceptance rate of 80.0%, an SAT middle 50% of 1220–1380, a class size of 4,192, and a yield of 14.0% based on the most recent Common Data Set filings. The 'Cradle of Coaches' — produced more football coaches than any other school. Founded 1809, older than the state of Ohio. Strong Farmer School of Business and a quintessential college town.