This study clarifies achievement trends that occurred under NCLB and explains why NCLB reporting practices made those trends so hard to see. It concludes by describing important contributions that new PARCC exams can make and warns of new reporting problems that threaten to squander those contributions before they see the light of day.

The Comparing Options in Secondary Mathematics: Investigating Curriculum (COSMIC) project is a longitudinal study of student learning from two types of mathematics curricula: integrated and subject-specific. Previous large-scale research studies such as the National Assessment of Educational Progress (NAEP) indicate that numerous variables are…