If there is no chain preschool class near home, choose a bigger and cleaner preschool class, which is privately run with only a few rooms, and it is better not to bring children in. After a long time, smart children may be regarded as stupid babies for you.
Go and see how many students there are in a class. If there are more than twelve teachers and then only three teachers, try not to choose this one.
Imagine that you are tired of watching the children alone. If there are fifteen children in a class, these children can't talk very well, and some just cry. There are only three teachers, and one teacher has to look at five. They will be tired, and there will be child abuse.
A class with twelve children and then three teachers is the best. There are too many teachers to see.
It is best for experienced teachers to run schools for a long time, and sometimes it is really bad to open a new school. It's better to have that kind of monitoring system, otherwise you really don't trust your child to the early education class.