Democrat Barack Obama has toured a Denver-area high school, vowing to fix the "broken promises" of the No Child Left Behind law if he's elected president.
Obama spoke Wednesday at the Mapleton Expeditionary School of the Arts in Thornton. He told a crowd he supports standards and testing, but said U.S. schools haven't been given the resources they need.
Obama's appearance in Colorado came one day after Republican John McCain, and the same day President Bush spoke at the U.S. Air Force Academy.
Obama says the U.S. education system is falling behind other nations', especially in math and science.
Also Wednesday, Obama picked up the support of Colorado superdelegate Pat Waak, the Democratic state party chairwoman.