Home visiting programs are preschool in its earliest form

"President Obama’s plan for universal preschool calls for a major investment in home visiting programs, which advocates say can bridge that gap.

"Home visiting programs have proliferated in the past few decades, with a few becoming national models. One 2012 study in New York found that children who participated in a home visiting program operated by Chicago-based Healthy Families America were less likely than a control group to repeat first grade and more likely to excel at skills such as following instructions and working well with others...."

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