The Research on Teacher Quality Demonstrates That

The research on teacher quality demonstrates that:

A) it is difficult to identify characteristics that will make effective teachers because these characteristics are hard to quantify.
B) teachers with higher levels of education and degrees from more competitive colleges are more effective classroom leaders.
C) experience, measured by years in the classroom, is a key predictor of teachers' effectiveness.
D) teachers are most effective when they are teaching a standardized curriculum.