Shannon Parola has used a navigation tool to help find child care and school options for her children. At the state level, these voucher systems divert money from public schools for parents to use on private school tuition, fees or related expenses. These days, private schools retain greater leeway in turning away students, and they have weaker legal requirements for dealing with students with disabilities. Winnie, the child care marketplace navigator that Leibson used to find a preschool, expanded into K-12 schools this year. Certainly, when talking to other parents, Parola can feel the strain making these choices puts on them.