A.H.
G. -
I recognize you asked for recommendations for a good cooperative preschool...which from reading the postings looks like they have long waiting lists. Perhaps as an alterative you could look at Bluebonnet. They are located in Cedar Park and are accredited. I toured the school recently and really wanted to enroll my son but they did not have an opening until the end of August. You might want to check them out.
Welcome to Austin...and yes it has changed quite a bit in the last 16 years!
A.