Govt. Eases 'No Child Left Behind' NPR's Anthony Brooks reports the Department of Education grants new flexibility to states in implementing the No Child Left Behind law's requirements for teachers. Under the law, every state must have a "highly qualified" teacher in every core subject by the end of the 2005-2006 school year. The department announced Monday that teachers in rural schools will get an additional year to show they are qualified. The department also made rule changes for science teachers and modified requirements for evaluating veteran teachers who teach multiple subjects.