The latest moves came Thursday, when Hernando resident Thomas Corkery withdrew from the contest while Lecanto resident Carol Synder entered the fray.
Candidates can withdraw from the race at any time.
School Board races now are non-partisan. As a result, the candidates' names will appear on the Sept. 5 ballot. All registered voters will be eligible to vote in the race. If one candidate garners 50 percent of the vote plus one, he or she would win the seat. Otherwise, the two top vote-getters will square off in the November General Election.