We address this issue by examining whether higher quality childcare is associated with better developmental outcomes at school entry for children from lower than higher income families. (jech.bmj.com)
Use their site to search vaccine requirements for school entry by state. (dadsadventure.com)
I also find large and meaningful reductions in the percentage of students at district schools who are required to repeat a grade as a result of charter school entry. (educationnext.org)