A single-session kindergarten class shall meet all of the following criteria:
(a) The class is maintained for a minimum of 180 minutes per schoolday.
(b) The kindergarten class teacher is assigned to only one session of kindergarten daily as a principal teacher.
(c) The kindergarten teacher is a full-time certificated employee.
(d) The kindergarten teacher shall be available for assistance or assignment in the instructional program of the primary grades when not involved in the kindergarten program.
(Amended by Stats. 1981, Ch. 1093, Sec. 14.5.)