Six out of nine board seats will be filled by new members after voters reshaped the board's makeup, The Atlanta Journal-Constitution reported.
Tuesday's elections resulted in the ouster of Chairman Reuben McDaniel, an investment banker who lost his at-large seat to attorney Cynthia Briscoe Brown. Brown won easily with 66 percent of the vote.
Three other races — for citywide, west Atlanta and south Atlanta districts — also were decided in runoffs.
The newcomers are expected to face several major decisions shortly after they take office next month.
They will hire a new superintendent, attempt to address the school system's 51 percent graduation rate and determine how much school choice to give families in an area where 1 in 12 students are enrolled in charter schools.
The board's turnover comes after revelations of widespread cheating and infighting that drew the attention of the school district's accrediting body.
A state investigation in 2011 concluded that 185 teachers and administrators participated in a scheme to artificially raise standardized test scores, and the school system was put on probation by the Southern Association of Colleges and Schools that year because of squabbles and factionalism on the board.
Information from: The Atlanta Journal-Constitution, http://www.ajc.com
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