About Carnegie Mellon University. Carnegie Mellon University in Pittsburgh, PA reports an overall acceptance rate of 11.1%, an early-round acceptance rate of 20.6%, an SAT middle 50% of 1510–1560, a class size of 1,808, and a yield of 47.0% based on the most recent Common Data Set filings. Top for CS/Engineering/Fine Arts. Acceptance rate varies dramatically by school (SCS ~3%, CFA ~8%, etc.).