Columbus Mayor Michael Coleman says he will not support any permanent successor to Columbus Schools superintendent Gene Harris if the school board hires one by the summer.Coleman wants the board to wait until July of next year. His stance is supported by some members of his Education commission, who say the district should first conduct a self-assessment, wait until the commission issues its recommendations, and wait until federal and state investigations into grade changing and attendance data scrubbing are completed. School board member Mike Wiles says Coleman's stance shows he is undermining the district.