 In October 2009, Castillo indicated she would run for another term, and defeated State Representative Ron Maurer in a close election in May 2010 to win a third term.In 2011, a state law eliminated the position of elected Superintendent of Public Instruction, effective with the end of Castillo's term or resignation, and made the Governor the Superintendent, with the responsibility of appointing a "Deputy Superintendent of Public Instruction".Castillo resigned in June 2012 to become a vice president of Project Lead the Way, a provider of middle and high school math, science, and engineering curriculum.