Cal. Code Regs. tit. 5 § 405
For apportionment purposes, in a situation described in (a), (b), or (c) of this section, only a pupil's actual attendance upon regular day school or class shall be counted. Such attendance shall be recorded in clock hours.
For some period of time during his regularly programmed school day he attends or engages in a school sponsored function or activity for which he pays a fee, an admission, or participation charge, except for fees authorized for adult education (Education Code Sections 52612 and 52613).
In this case, his attendance is the sum of the hours of his actual attendance upon the regular school plus the hours of attendance in the work experience class which meet the requirements of Section 46300 of the Education Code.
Whenever a pupil is excused from a school or class to attend or participate in a function or activity which does not meet the requirements of Section 46300 of the Education Code.
Cal. Code Regs. Tit. 5, § 405