The BUILD Initiative, ZERO TO THREE, and Start Early, all of whom are members of the National TA Collaborative to Maximize Federal Early Childhood Investments, collaborated on In Brief: Learning from the New Round of PDG B-5 Systems Building Grants to share critical early childhood issues that states and their partners are addressing by using the information found in the grant applications. These grants not only provide immediate benefits and long-term systems implications for the states and their communities; they also shed light on the state of the field, which we attempt to outline through this set of briefs.