Are early learning and care programs adequately staffed with qualified educators? To what extent are staff required to, and provided supports that enable them to, participate in professional development (PD) opportunities that support the learning and growth of DLLs? Addressing these two questions is the focus of this research brief from the First 5 CA DLL Pilot Study. Through a survey of 744 administrators from a representative sample of licensed early learning centers and family child care homes (FCCHs) across California, we examine how many early educators are required to participate in PD related to supporting DLLs, the characteristics of that PD, and the supports offered to facilitate and encourage participation. This brief focuses on the 98% of centers and 70% of FCCHs that serve at least one DLL, and describes the PD requirements and supports at those sites. (author abstract)