Gov. Jay Nixon says he will sign legislation allowing charter schools to operate in more areas of Missouri but with greater oversight.
But the governor vetoed a separate education bill that would have made it easier for some students to transfer to other districts.
Nixon plans a formal signing ceremony for the charter school bill Wednesday night at the Missouri Girls State convention in Warrensburg.
More than 3,500 students will be displaced when a network of St. Louis charter schools run by Virginia-based Imagine Schools Inc. is shuttered in a closure so massive it may be unprecedented nationally.
Todd Ziebarth of the National Alliance for Public Charter Schools told the St. Louis Post-Dispatch that the closure was "definitely" the largest he knew of.
St. Louis Public Radio is a service of the University of Missouri-St. Louis.