California Code, Education Code - EDC § 49402

Contracts between any city, county, or local health district and the governing board of any school district located wholly or partially within such city, county, or local health district for the performance by the health officers or other employees of the health department of such city, county, or local health district of any or all of the functions and duties set forth in this chapter, Section 49404, and in Article 1 (commencing with Section 49300) of Chapter 8 of this part relating to health supervision of school buildings and pupils are hereby authorized.

In any such contracts the consideration shall be such as may be agreed upon by the governing board and the city, county, or local health district and shall be paid by the governing board at such times as shall be specified in the contract. This section shall not apply to any district which is under the control of a governing board which has under its control a district or districts having a total average daily attendance of 100,000 or more pupils.