Your child takes responsibility. Grandparents can help. Your child can work with an older sibling. This can be a baby-sitter, a college student, a professional tutor, a teacher or aide who wants to work over the summer, or a senior citizen or retired person. Schools often offer such programs or sometimes they are available privately.
Cost is a factor.
Very good programs help kids acquire new skills and practice old ones. Unfortunately, they do not do a very good job of connecting the learning that has just taken place in school or building a bridge to fall.