California Code, Education Code - EDC § 17622

(a) No fee, charge, dedication, or other requirement may be levied by any school district pursuant to Section 17620 upon any greenhouse or other space that is covered or enclosed for agricultural purposes, unless and until the district first complies with subdivisions (b) and (c).

(b) The school district governing board shall make a finding, supported by substantial evidence, of both of the following:

(c) In determining the amount of the fees or other requirements, if any, to be levied on the development of any structure as described in subdivision (a), the school district governing board shall consider the relationship between the proposed increase in the number of employees, if any, the size and specific use of the structure, and the cost of the construction.  No fee, charge, dedication, or other form of requirement, as authorized under Section 17620, shall be applied to the development of any structure described in subdivision (a) where the governing board finds either that the number of employees is not increased as a result of that development, or that housing has been provided for those employees, to the extent of any increase, by their employer, against which housing a fee, charge, or dedication, or other form of requirement has been applied under Section 17620.  In developing the finding described in this section, the governing board shall consult with the county agricultural commissioner or the county director of the cooperative extension service.