There are several threads on this very subject already .... You can try searching them but in a nut shell yes they must be toilet trained, must be able to dress/undress them selves for going outside, it is helpful if they know how to hold a pencil, know how to cut, can recognize their name, know which way a book goes, can count to 5, knows abc's ...... These are just a few.
A lot can change in the next 11 months when they are scheduled to enter school but In all honesty if these children don't talk and are not trained and the parents are not working on these issues ..... It's not your problem.