Using test scores as a way to evaluate teachers is a guaranteed way to ensure students fail to learn. Emphasis on getting high test scores will outweigh student learning. As parents to seven children, we've seen this time and again. School systems want high test scores so begin teaching test answers rather than directing any real energies into education. Coming from a long line of teachers, I can tell you that the teacher worth his or her salt is the one that helps a child love to learn.