Staggered terms are allowed under Corporations Code §7220(a)
[The] bylaws may provide for staggering the terms of directors by dividing the total number of directors into groups of one or more directors. The terms of office of the several groups and the number of directors in each group need not be uniform.
Original bylaws from developers often set the term of office at one year, which requires all directors to stand for election every year. Most associations eventually amend this provision to establish 2-year staggered terms so as to create stability and continuity on the board. Unless bylaws provide otherwise, staggered terms also apply to appointed directors