Ill. Admin. Code tit. 68, § 1175.336
a) The barber teacher refresher course shall include a minimum of 250 clock hours of instruction and practical experience and may include online instruction for theory not to exceed 10% of the total hours in subjects in each of the categories of training defined in Section 1175.335:
b) In the case of barber teacher applicants who fail to pass a third examination, the remedial training required by Section 1175.335(c) shall include 80 clock hours of additional instruction in the following categories of training defined in Section 1175.335:
(Source: Added at 42 Ill. Reg. 15159, effective August 10, 2018)