Minn. Stat. § 122A.15
The term "teachers" for the purpose of licensure, means all persons employed in a public school or education district or by a service cooperative as members of the instructional, supervisory, and support staff including superintendents, principals, supervisors, secondary vocational and other classroom teachers, librarians, school counselors, school psychologists, school nurses, school social workers, audio-visual directors and coordinators, recreation personnel, media generalists, media supervisors, and school speech-language pathologists. This definition does not apply to sections 122A.05 to 122A.093.
"Supervisory personnel" for the purpose of licensure means superintendents, principals, and professional employees who devote 50 percent or more of their time to administrative or supervisory duties over other personnel, and includes athletic coaches.
Minn. Stat. § 122A.15
1959 c 700 s 3-5; Ex1959 c 71 art 6 s 3; 1975 c 162 s 31; 1976 c 222 s 10,208; 1980 c 345 s 1; 1Sp1985 c 12 art 8 s 18; 1987 c 398 art 7 s 28; 1989 c 251 s 1, 2; 1994 c 647 art 7 s 5; 1996 c 305 art 1 s 138; 1998 c 397 art 8 s 6, 7