California Code, Education Code - EDC § 19700

(a) Except as otherwise provided in this article, the Uniform District Election Law (Part 4 (commencing with Section 10500) of Division 10 of the Elections Code) shall govern and control the conduct of elections pursuant to this chapter.  Elections shall be held biennially in the district on the same day as the school district election as specified in Section 5000 in the odd-numbered years.

(b) The trustees shall hold office for the term of four years beginning on the first Friday in December next succeeding their appointment or election.

(c) The members of the first board of library trustees appointed or elected in a district shall, at their first meeting, so classify themselves by lot that their terms shall expire:  two on the first Friday in December of the first odd-numbered calendar year next succeeding their appointment or election, and three on the first Friday in December of the second succeeding odd-numbered calendar year.