We have done two studies of the four-year-old kindergarten (4K) – five-year-old kindergarten (5K) transition. First, we studied transition practices at four elementary schools in Madison. We chose these sites intentionally to represent the wide variety of 4K to 5K transition implementation plans in our schools. Our team interviewed school staff, as well as 4K teachers whose students would attend these schools. We also reviewed transition plans and other resources created by school staff. This work took place in spring of 2018; we issued our final report in November 2018. Second, we designed, implemented and analyzed a home visit intervention for incoming kindergarten students. We recruited 12 kindergarten teachers in seven elementary schools in Madison. Each teacher received training from our team (co-designed with MMSD staff and leadership) and then conducted two visits with up to eight randomly selected students and families. These visits took place in the summer of 2019 and teachers wrote reflections after each visit. In the fall of 2019, we interviewed teachers, families and students about their experiences. Our team analyzed the data and created two reports. The first focused on implementation of the home visit program (released November 2018); the second explored the experiences of teachers, families, and students (released in May 2019). (author abstract)