In the era of No Child Left Behind, principals are increasingly held accountable for student performance. But are teacher labor agreements giving them enough flexibility to manage effectively? This study answers this question and others. It examines how much flexibility school leaders enjoy on key dimensions of management in America's fifty…

Although states have maintained a focus on recruiting and retaining teachers, many schools and districts still face daunting challenges in ensuring a qualified and competent teaching corps. It is particularly difficult for schools considered hard to staff-those with high concentrations of low-performing, low-income students; high teacher turnover;…