True, kids that age don't need academics. They need to learn how to live in a society. How to eat and wash properly. How to play. How to get dirty and clean again. How to dress and undress. How to play by the rules together with other kids. That's more than enough.

I used to teach at an excellent, excellent preschool. We didn't even have much schedule, a let alone curriculum. The kids learned very well from playing. We were there for questions, social coaching, support.