From reducing class size to changing curricula to increasing funding, lawmakers and education officials have been trying to find, often in vain, the silver bullet that will raise test scores and student learning. These quick-fix solutions, however, not only fail to address the public education system’s core problems but also usually have little or no basis in empirical research. For example, evidence shows little improvement in student performance as a result of states’ spending billions of dollars on class-size reduction. What the research does show is that the quality of classroom teachers has the greatest impact on the performance levels of students. High-quality teachers using proven teaching methodologies produce high-achieving students.