Wis. Stat. § 349.215: Authority to appoint school crossing guards.

The governing body of any city, village, town or county may by ordinance provide for the appointment of adult school crossing guards for the protection of persons who are crossing a highway in the vicinity of a school. The school crossing guards shall wear insignia or uniforms which designate them as school crossing guards and shall be equipped with signals or signs to direct traffic to stop at school crossings.