If you live in the McKinney area, and you need a great preschool, I recommend Crossing Point Christian School, where every child feels loved by every adult in the place. It’s Christian, but not importunately so, and it’s a great place for your child or grandchild. It’s the unofficial official preschool of Hawkins & Ball.
In the Commerce area, you might try the Children’s Learning Center on the campus of Texas A&M University – Commerce. Several members of our family have used their services and we find it topnotch!