Establishing professional communities of educators from districts and schools has gained popularity as a mechanism for collaboratively thinking through and enacting change in education. In 2013, 10 California school districts received grant funding from the S. D. Bechtel, Jr. Foundation ("the Foundation") to participate in the Math in…

In their proposals to join the Math in Common (MiC) initiative, staff from each of the 10 participating districts acknowledged that the shifts required to implement the Common Core State Standards for Mathematics (CCSS-M) (NGA Center & CCSSO, 2010) would be a huge lift for teachers. They knew that mathematics teachers would be required to take…

For school districts in California, just as one set of revolutionary new content standards is beginning to feel familiar, another deep change is brewing. Districts have now had more than five years to wrestle with how they implement the Common Core State Standards for Mathematics (CCSS-M) (NGA Center & CCSSO, 2010). Many have made large-scale…