All sources 2016 on. Reliable sources. Normal childcare how many are there in the United States, what do they do, how do they help children and parents. Quality childcare centers what is the major difference between normal daycares and quality daycares. Quality assurance programs what are they, how do they help the children. What is the difference when a center participates in these types of programs as compared to the normal and quality centers. What are the reasons to participate in these programs.