This guidance document outlines the intent of California’s UPK model of implementation and provides additional guidance on Transitional Kindergarten Stand-Alone Classes, Early Admittance Transitional Kindergarten Stand-alone Classes, California State Preschool Program and Transitional Kindergarten combination classes (California State Preschool Program funding and Local Control Funding Formula Funding), Locally-Funded Preschool and Transitional Kindergarten Combination Classes, California State Preschool Program Stand-alone Classes, Head Start and Transitional Kindergarten Combination Classes, and Head Start Stand-Alone Classes.