Cal. Education Code - EDC § 45140. Section 45140.
The governing board of any school district which has not adopted the merit system pursuant to Article 5 (commencing with Section 45220) and Article 6 (commencing with Section 45240) may contract with temporary-help employment agencies to fill vacancies of management and confidential employees without the necessity of complying with the requirements of this part.
The contracts for the services of temporary-help agency employees under this section shall not exceed 60 working days per position per approved leave period, not to exceed two per year.