If you are looking for a preschool, you are probably asking yourself: is this school good enough for my child?
I would ask you: Is your child ready enough to attend preschool?
In my experience, problems in preschool are mainly related to a child's behavior. If you are concerned about your child's behavior at home, chances are that teachers will also find it challenging.
If you child is used to having limits at home, eats well and doesn't get upset when things don't go his or her way..., then your child should be fine no matter which school you choose. Most kids adapt reasonably quickly to school, love to learn and play, and will make the best of the preschool experience. Teachers will take care of the rest.
But when it comes to behavior, there is no place like home.