About Boston University. Boston University in Boston, MA reports an overall acceptance rate of 12.8%, an early-round acceptance rate of 29.5%, an SAT middle 50% of 1430–1510, a class size of 3,268, and a yield of 31.0% based on the most recent Common Data Set filings. Major private research university in Boston. Returning to test-required for 2025-26 cycle. Strong in communications, business, and health sciences. Median SAT 1470.