(a) “Board” means the board of education of any unified school district.

(b) “Board member” and “member” mean a member of a board of education of any unified school district.

(c) “Holdover member” means a member, or an appointed successor to such member, whose term extends for any period before and two years after the July 1 following a change in method of election under this act.

(d) “Member position” means one of the seven positions of members of the board of education when a district method is used, each member position, except the at-large member position, is numbered.