The historic $3 billion investment in the California Community Schools Partnership Program provides an opportunity to transform schools into community hubs that deliver a whole child education. This brief examines key elements of the new law. It then lays out evidence-based principles of high-quality community schools implementation that are grounded in the four research-backed pillars included in statute and aligned with the science of learning and development. It concludes with a discussion of the technical assistance needed for high-quality implementation. [This report was prepared in collaboration with the Opportunity Institute.]