This paper is a synthesis of case studies of four districts that implemented multifaceted reforms aimed at offering rigorous instruction in mathematics and science for all students as part of a National Science Foundation-supported partnership. A common theory of action aimed for a rigorous curriculum, professional development delivered close to…

Many urban districts have adopted interim assessments in recent years as a supplement to annual testing. Possible purposes for such tests include monitoring and assisting student progress, aligning the curriculum, and practicing for state exams, but little is known about how effectively real systems advance these purposes. The Providence Public…