This guide -- developed by the Nevada Department of Education with the support of EducationCounsel and input from a number of local school administrators, teachers, and early childhood professionals -- intends to support schools and school districts as they plan through the uncertainty that comes with the first day of kindergarten in 2021 and beyond. Considerable research suggests that school districts that focus on and invest in activities to support kindergarten transitions benefit in both the short- and long-run. Children are better prepared to hit the ground running in kindergarten, and inequities are reduced throughout elementary school for populations of children who have been historically underserved. Teachers in districts and schools that offer robust support for new kindergarteners also report higher levels of satisfaction with the readiness of new children and their abilities to connect with children from low-income families. (author abstract)