Slippery Rock University of Pennsylvania (also known as The Rock or SRU) is a public, master's-level university that offers some doctoral programs. SRU is a member of the Pennsylvania State System of Higher Education. Slippery Rock University is located in Slippery Rock, in the U.S. state of Pennsylvania, approximately 52 miles (84 km) north of Pittsburgh and approximately 80 miles (130 km) south of Erie. The university has been coeducational since its founding in 1889. It has one of the largest campuses in western Pennsylvania, occupying 611 acres (2.4 km²).