Iowa Admin. Code r. 281-68.6
After the initial four-year contract for a charter school and at the end of each renewal period thereafter, the school board that established the charter school shall, in the absence of revoking the charter pursuant to subrules 68.7(1) and 68.7(2), take affirmative action to renew a charter school contract. The school board shall hold a public hearing on the issue of renewal and shall submit to the department a copy of the minutes of the public hearing showing that a majority of the school board members voted in favor of renewal of the charter Any action to renew a charter must specify the number of years, which shall not be more than four years, for which the charter was renewed by the school board.
A school board must submit a new application to the department if the board modifies any of the terms of the original charter
Iowa Admin. Code r. 281-68.6