The Department of Education and a statewide association composed exclusively of school district governing boards or county boards of education, or both, acting jointly, may conduct annual workshops within this state. Such workshops shall include but are not limited to study and instruction on the subjects of school finance, the Education Code and related laws, and the ethics, duties, and responsibilities of school district governing boards and county boards of education. A reasonable fee not to exceed the estimated pro rata cost of the workshop may be charged board members and members-elect who attend.