On April 23, 2012, the Bill & Melinda Gates Foundation hosted a one-day summit focused on the issue of education interoperability vis-a-vis the implementation of the Common Core State Standards. The issue of the granularity of the assignment of the identifiers in the work being undertaken by CCSSO and NGA, in partnership with Student Achievement Partners, has raised concerns and the convening was intended to help identify and chart a way forward to meeting the various requirements of the states and educational content industry.