C.K.
Well, there's "good" and then there's "popular". Depends on what you're looking for. There are so many different kinds of preschools for different tastes.
There's half day preschools that only go until noon and then there's full day preschools that go until 2:30 or 3pm, then there's preschools who offer extended hours care for working parents.
I have my 4 year old at Dallas Day School where they also offer extended hours care because my husband and I both work. They are located in East Dallas off Haskell Avenue across from Cityplace Market. Their address is 4242 Office Parkway and their number is ###-###-####. I've also heard some really good things about Highlander School on Plano Rd. and White Rock Montessori.