A Wisconsin state senator says the waiver of the No Child Left Behind Act means this state can more effectively improve its public schools. Wisconsin’s waiver was approved Friday by the U.S. Department of Education. A total of 26 states have received the waivers so far. Wisconsin Senate Education Committee Chairman Luther Olsen says the state can now address the achievement gap in public schools, using plans focused on the needs of students here. The waiver also allows for teachers to have their performance evaluated. Members of both parties admit the federal law is flawed and work is being done in Washington to re-write it. Olsen says he hopes the states can continue to take their own approaches to making the system work better.