The St. Joseph Booster Club is the organization that raises money for student athletes that attend St. Joe's to participate in CYO sports. All parents of SJCS children are booster members. The following are the current board members:

Mr. Brian Marischen - Athletic Director
Mr. Brad Lantis - President
Mrs. Kari Espel - Vice President
Mrs. Karen Bultman - Secretary
Mr. Matthew Meyer - Treasurer
Mrs. Chris Middendorf - Volleyball Coordinator (Girls)
Mrs. Karen Bultman - Volleyball Coordinator (Boys)
Mr. Brad Lantis - Basketball Coordinator
Mr. Joe Rings - Football Coordinator
Mr. Craig Martin - Wrestling Coordinator

Mr. Ron Wagner - Archery Coordinator