Schools for Pre-Schoolers

I guess I really don't think about preschool any more because both of my kids are older and I am now teaching a middle school.  But, according to a recent blog on Education Next they discussed how preschools different in ranges from offerings and educational benefits.  Does the preschool really make a difference?  Well, continuing on to the next part of the article then states that preschool kids usually spend more time watching tv than in preschool so maybe we should be focusing on the preschool programming on the tv instead of the quality of their preschool.