California Code, Education Code - EDC § 52373

(a) The governing board of any high school district maintaining an agriculture course may transport pupils, instructors, or supervisors of classes to and from any classes or places where the work of the classes is being done, whether within or without the district, in the same manner and subject to the same limitations as in transporting pupils to and from school.

(b) No pupil shall be required to pay any fee or charge for transportation associated with activities of career technical student organizations which are a part of a career technical class or course of instruction offered for credit, when those activities are integral to assisting the pupil to achieve the career objectives of the class or course.