Ross said the employee responsible for leaving failing online schools out of charter school evaluations has resigned and he does not believe any current employees were involved in the manipulation of the data.
"It's not appropriate. It's not acceptable," said Ross.
He said the data-rigging scandal has "undercut" the state's efforts to improve its charter schools.
Ross said he is creating a whistleblower policy to prevent future problems. Records show ODE employees expressed concern about the plan to exclude the data to the employee overseeing the project.