During a tour of a preschool there are some important questions you need to ask. First and foremost, you need to ask what the philosophy of the school is. It needs to be very clear for you, as a parent, so it matches your values. The second thing you need to ask is how the ratio between teacher and child is because it is important that your child has enough adult supervision. The third and most important part is how communication is. Is there communication between school and home? It is important when there is a challenge with your child, how it is dealt with. Those are the most important questions you need to ask when you go on a tour.