Using narrow test scores as the only means of accountability does not serve students, teachers, or schools. Jonathan E. Collins writes that policy makers and educators should consider accountability as an education system designed to be accountable to the best version of students. This means assessing outcomes that policy makers too easily…

A growing body of research recognizes the critical role of the school principal, demonstrating that school principals' effects on student outcomes are second only to those of teachers. Yet policy makers have often paid little attention to principals, choosing instead to focus policy reform on teachers. In the last decade, this pattern has shifted…