No person shall drive a school bus when transporting school children to or from school or upon a school-related trip or activity without having a valid class A, class B, or class C driver's license with a school bus endorsement except that a person possessing a valid driver's license but not a school bus endorsement may drive a type III vehicle or a school bus, subject to the requirements of section 171.02, subdivisions 2, 2a, and 2b.
Minn. Stat. § 171.321
1971 c 644 s 16; 1975 c 265 s 1; 1985 c 291 s 23; 1987 c 379 s 2; 1989 c 140 s 13; 1990 c 529 s 9; 1993 c 57 s 1; 1994 c 483 s 1; 1994 c 603 s 17; 1994 c 647 art 12 s 29-32; 1Sp1995 c 3 art 2 s 42-44; art 16 s 13; 1996 c 275 s 12; 1997 c 187 art 3 s 25; 1Sp1997 c 4 art 12 s 31; 2000 c 489 art 6 s 33-36; 2001 c 98 s 1; 2002 c 321 s 2; 1Sp2003 c 9 art 1 s 48; art 10 s 13; 2004 c 206 s 29; 2004 c 294 art 2 s 31; 2007 c 146 art 8 s 13; 2008 c 350 art 1 s 64; 2009 c 96 art 8s 12-14; 2010 c 351 s 37, 73