As of 2006, South Dakota has a total primary and secondary school enrollment of 136,872, with 120,278 of these students being educated in the public school system. There are 703 public schools in 168 school districts, giving South Dakota the highest number of schools per capita in the United States. The current high school graduation rate is 89.9%, and the average ACT score is 21.8, slightly above the national average of 21.1. 84.6% of the adult population has earned at least a high school diploma, and 21.5% has earned a bachelor's degree or higher. South Dakota's 2008 average public school teacher salary of $36,674, compared to a national average of $52,308, was the lowest in the nation.
The South Dakota Board of Regents, whose members are appointed by the governor, controls the six public universities in the state. South Dakota State University (SDSU), in Brookings, is the largest university in the state, with an enrollment of 12,376. The University of South Dakota (USD), in Vermillion, is the state's oldest university, and has South Dakota's only law school and medical school. South Dakota also has several private universities, the largest of which is Augustana College in Sioux Falls.