“Kindergarten has lost a lot of playtime and socialization time because there is this push for the academic side. For the young 5-year ... preparing activities for 3- and 4-year-olds.

In Boston public schools, 3, 4 and 5-year ... activities, they're fun. They're fun. And as a teacher, you really get to dig deeply into the development of math and math ideas in young kids.