Internet connectivity has become a critical resource for teaching and learning. The Common Core State Standards (CCSS) is a prime example, with schools expected to implement online assessments and use online resources for instruction. Yet there is little known about the extent to which local education agencies (LEAs) and schools are taking…

How many beginning teachers struggle to create new lessons despite the fact that experienced teachers have already designed effective lessons for the same content? Shulman (1987) used the term "collective amnesia" to describe the failure of school leaders to design professional development that included the collection of its best…