Is it customary for a Montessori nursery to ask parents to attend a full day class before registering the child? Didn't happen before so not sure what to do about it as it would be really hard timewise to go and quite a strain financially. Had my son in a Montessori before and there was no such thing required plus i was able to visit the school before. This nursery says for security reason I cannot visit. And I don't know anyone who goes there to at least get another opinion.