There are hereby transferred to the director of the department of human services:
(1) Those functions formerly administered by the department of education with respect to vocational rehabilitation;
(2) All functions of vocational rehabilitation formerly of the department of education and of all other officers, employees, agencies and advisory councils, committees or commissions of vocational rehabilitation;
(3) So much of other functions, or parts of functions, of the department of education as is incidental to or necessary for the performance of the functions transferred by subsections (1) and (2).