To independently operate or cooperate with existing companies in the operation of a business or businesses for the sole purpose of providing training for students in vocational education programs. Any proceeds from said operation shall be applied towards the costs of establishing and maintaining these businesses. Regarding businesses with which the school board cooperates in operating for vocational training purposes, the school board shall receive a semi-annual account from each cooperating company of all costs and proceeds attributable to the student business-training program. Should the proceeds ever exceed the establishment and maintenance costs, then that excess shall only be directed toward expanding business-operation training in vocational education programs.