Original sentence: Other non-football conference schools that sponsor football include six of the Missouri Valley schools (Drake,  Illinois State, Indiana State, Missouri State, Northern Iowa, and Southern Illinois) and three of the Horizon League schools (Butler University, Valparaiso University, and Youngstown State University)
Edited sentence: Other non-football conference schools that sponsor football include six of the Missouri Valley schools (Drake, Illinois State, Indiana State, Missouri State, Northern Iowa, and Southern Illinois) and three of the Horizon League schools (Butler University, Valparaiso University, and Youngstown State University)