Stephen Adams, a Boise attorney, has dropped out of the race for Boise School District trustee.
He notified the district on Friday and did not provide a reason.
Three other candidates remain: Incumbent Dave Wagers, president of Idaho Candy Co., Beth Oppenheimer, executive director for the Idaho Association for the Education of Young Children; and Monica Walker, a loan officer.
The two candidates with the most votes will be elected to two seats on the school board.
The election is Sept. 6.