Despite critics who argue the cost isn't worth the benefits, the research is clear. High-quality universal preschool does provide worthwhile long-term benefits for kids.

Readers describe what's going on in kindergarten classes and their reaction.

It's all work, work, work and no play.

What the research really says.

There is a lot to learn from the city's successful pre-K program.

What are we doing to young kids in school?

It's not good enough just to call for universal pre-K.