 Wylie East became a 9-12 school with the Class of 2012 being the first class to graduate after the district voted to have multiple 9-12 campuses in January 2008.Wylie East began the 2009-2010 school year with freshmen and sophomores.Wylie ISD serves most of the city of Wylie, including the city of St. Paul, a portion of the city of Murphy, and the Collin County portion of the city of Sachse.