Bowling Green State University (BGSU) is a public research university in Bowling Green, Ohio, United States. The 1,338-acre (541.5 ha) main academic and residential campus is 15 miles (24 km) south of Toledo, Ohio. The institution was granted a charter in 1910 as a normal school, specializing in teacher training and education. The university has developed from a small rural normal school into a comprehensive public research university. It is a part of the University System of Ohio and is currently classified as R2: Doctoral Universities with high research activity.