"These policies, combined with state accountability measures required under the federal No Child Left Behind Act, have limited teachers’ professional autonomy to make the best decisions on behalf of their students.3 The study noted that seasoned teachers often report that they can no longer teach a rich and varied curriculum because of fears their students’ test scores will suffer – their own fears, that their principals’ fears, and their district and state leaders’ fears. Teachers are at the bottom of a hierarchical leadership pyramid, and each level of leadership imposes a new layer of accountability upon them, without providing teachers with commensurate autonomy. In short, teachers are being held accountable for the outcomes of decisions they do not make." Education Evolving, 2014, Pg. 4