The following are exempt from criminal or other action hereunder:
(1) recognized and established schools, churches, museums, medical clinics and physicians, hospitals, public libraries, governmental agencies or quasi governmental sponsored organizations, and persons acting in their capacity as employees or agents of such organization. For the purpose of this section "recognized and established" shall mean an organization or agency having a full time faculty and diversified curriculum in the case of a school; a church affiliated with a national or regional denomination; a licensed physician or psychiatrist or clinic of licensed physicians or psychiatrists; and in all other exempt organizations shall refer only to income tax exempted organizations which are supported in whole or in part by tax funds or which receive at least one-third of their support from publicly donated funds;
(2) individuals in a parental relationship with the minor; and
(3) motion picture machine operators, stagehands, or other theatre employees such as cashiers, doorkeepers, ushers, and concession employees, if such person or persons have no financial interest in the entertainment presented other than the salary or wage, or in any theatre or place where such employee has no financial interest when the employee's services are obtained solely for salary or wage; provided, that such employee is under the direct supervision of a theatre manager who is a resident of this state and who is not exempt from action under sections 617.291 to 617.297.