Boston will eliminate middle schools under a plan proposed by Superintendent Tommy Chang. The city already has created a number of K-8 schools. The plan calls for students to attend a K-8 and a high school with grades 9 to 12 or a K-6 and a school that includes grades 7-12. Chang wants to eliminate the “middle school plunge” in achievement. “Moving to a middle school causes a substantial drop in student test scores (relative to that of students who remain in K–8 schools),” re