Any group of students may organize a student body association within the public schools with the approval and subject to the control and regulation of the governing board of the school district. Any such organization shall have as its purpose the conduct of activities on behalf of the students approved by the school authorities and not in conflict with the authority and responsibility of the public school officials. Any student body organization may be granted the use of school premises and properties without charge subject to such regulations as may be established by the governing board of the school district.