研究によると、生徒の成績のばらつきは学校間よりも同じ学校内の教室間の方が大きいです。子供に最高の教育を受けさせるには、優れた学校に割り当てるよりも、優れた教師に割り当てる方が重要です。

Research shows that there is only half as much variation in student achievement between schools as there is among classrooms in the same school. If you want your child to get the best education possible, it is actually more important to get him assigned to a great teacher than to a great school.