Wis. Stat. § 454.10: Apprenticeship.

(1) All apprentices shall be employed under an apprentice contract under s. 106.01 and shall be governed by s. 106.01, the apprenticeship rules of the department of workforce development, and the rules of the examining board.

(2) Apprentices shall receive at least 3,712 hours of practical training and at least 288 training hours of theoretical instruction in a school of cosmetology licensed under s. 440.62 (3) (ar), exempted under s. 440.61, or accredited by an accrediting agency approved by the board in order to complete the apprenticeship program and be eligible to take the examination for a cosmetologist license. Apprentices shall receive training for a total of at least 32 hours per week. The training shall be completed in not less than 2 years and not more than 4 years.

(3)

(a) No apprentice under this section may practice cosmetology except under the supervision of a licensed cosmetologist whose cosmetology license is not an inactive license and who has completed at least 2,000 hours of practice as a licensed cosmetologist.

(b) Apprentices shall be trained in all branches of practical work and in all subjects required to be taught in schools of barbering or cosmetology as prescribed by the examining board by rule.

(4) A person who has successfully completed the requirements of sub. (2) may not continue to practice as an apprentice but may apply for a temporary permit under s. 454.06 (10) (a).