Wis. Admin. Code § PI 34.109
(2) Short-term substitute. A school district may employ an individual as a short-term substitute teacher for no more than 45 consecutive days in the same teaching assignment. A short-term substitute teacher may be employed to teach any subject at any grade level. A school district may only employ an individual as a short-term substitute teacher if the individual has one of the following:
History: CR 17-093: cr. Register July 2018 No. 751, eff. 8-1-18.