New teacher evaluation reform efforts in the United States hold principals accountable for improving teaching and learning. Yet little is known about how effective principals are at these instructional leadership tasks or how principals experience and adapt to the demands of teacher evaluation reform over time. In the current study, principals (n…

Drawing from a three-year qualitative multi-case study that examined three urban elementary schools as these schools instituted grade-level data-based collaboration as a school-wide literacy reform strategy, this article investigates how knowledge of student learning and instructional considerations evolved over time across this collection of…