it is better to go a more sizeable school than a small one. i guess it teaches better.
What makes you think that?
There are big schools that are good, big schools that are terrible, small schools that are good, and small schools that are terrible.
I wouldn't worry about school size at all, as long as it's not so small that you have trouble getting airplanes.
Again, visit all the schools and talk to all the instructors before making a decision. Size doesn't mean anything.