Fredrich v. Independent School District No. 720 , 465 N.W.2d 692 ( 1991 )
Lunde v. Independent School District No. 255 , 543 N.W.2d 703 ( 1996 )
Langan v. Independent School District No. 31, Bemidji , 522 N.W.2d 349 ( 1994 )