St. Mary's Colgan High School is a parochial, Roman Catholic high school in Pittsburg, Kansas in the Roman Catholic Diocese of Wichita. St. Mary's Colgan is under the direction of Our Lady of Lourdes Catholic Parish. The school serves students in grades K-12. The athletic teams at St. Mary's-Colgan are referred to as the Panthers and are classified as a 2-1A school according to the Kansas State High School Activities Association.