MrsMom writes:
Check out the preschools in your area, choose the one you see as best for your child, then call and discuss the potty training issue with them. If they will not accept a child who is not potty-trained, call your next choice and definitely work on the potty training. Most schools will not accept a child who is not at all or not completely potty trained, but some will accept a child who is "just about there". Good luck!