To solve two enduring problems in education--unacceptably large variation in learning opportunities for students across classrooms and little continuing improvement in the quality of instruction--the authors propose a system that centers on the creation of shared instructional products that guide classroom teaching. By examining systems outside…

Explores reasons for the tenuous relationship between educational research and educational practice. Suggests changes in research and policy to bring educational research directly to bear on educational problems. The major problem is that researchers are searching for variables that relate to improved outcomes, whereas educational innovators are…