The Arizona Senate has killed a bill prohibiting the state from using a set of new educational standards adopted by most of the nation. Senate Bill 1310 by Republican Senator Al Melvin of Tucson would revoke the use of Common Core standards. The standards aim to focus learning on comprehension and real life examples and were designed by a national group of governors and education leaders. Arizona adopted them in 2010 without opposition, and school districts have spent millions implementing them. But some Republicans have denounced the standards, saying they are a poorly conceived federal effort to usurp states' rights. Supporters say eliminating the program would cost Arizona millions in federal funding and would make the state less economically competitive. The Senate killed the bill with an 18-to-12 vote on Wednesday.