M.S.
I live in Rockwall, and have a 2 year old and one on the way (any day!). Rockwall schools were just nominated by the state as Exemplary. My Mom taught school for 27 years, and says that the state accreditations are accurate and should be listened to. I have heard anything else to the contrary.
Although, I am not familiar with Wylie schools. I have no doubt that my kids will attend public school here instead of private, like we had originally imagined. The new Rockwall/Heath High School was recently on the Today show as the most expensive school built to date in the US. Not that expensive equates to a good education, but I just wanted to let you know about the new school in case you weren't aware. They have all marble floors, tennis courts, etc. Hope that helps!