R.H.
Lewisville/Flower Mound schools rank one of the best in the state. I know a lot of the parents at Valley Ridge, our sons do Cub Scouts there they are the best. Still public/private is a family decision. Check out lisd.net for information about the district and the school, each school has their own website.
My older son went to Windmill for Pre-K because it also offered an afterschool daycare enviroment for working parents. That worked out great, we went straight to 1st grade in the public school. Similar program on Edmonds and Old Orchard.
Good Luck!