Improving teacher preparation is critical to long-term improvement in teacher quality. More than 200,000 new teachers enter classrooms each year. Increasing student enrollment, the retirement of baby boom generation teachers, and high attrition in their first five years (between 40 and 50 percent of new teachers leave the profession) have…

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;…