To learn about the pandemic's impacts on young children's learning and development the National Institute for Early Education Research (NIEER) developed a parent survey regarding children's home learning activities and preschool participation during the pandemic. This report presents key lessons from the spring 2021 preschool learning activities survey. [For "Seven Impacts of the Pandemic on Young Children and Their Parents: Initial Findings from NIEER's December 2020 Preschool Learning Activities Survey. Research Report," see ED613105.]