S.W.
I tought preschool and toddlers for 10 yrs and this is a quite normal reaction. He mostly likely is just relizing that is a permenant change so he is trying to deal with it. I know how hard it is but, you must keep assuring him that everything is fine and talk about his new "school" like it is a wonderful thing. When you drop him off just say I will be back at whatever time you pick him up and tell him to have fun. This should only last a couple of weeks at the most. If it doesn't there may be something up with the place he doesn't like and is truely scared. Then you need to make a meeting with the directer and teachers and find out what the problem is. When you are at home talk to him about his day and praise him when he makes art and things so he feels proud of his "school". If they say he stops crying shortly after you leave then he most likely does and when you drop him off make it brief as possible and keep up a happy attitude so he doesn't sense that you are upset as well. If this is a good daycare the teachers are used to this kind of thing and know how to handle it. Chin up it will pass as he meets new friends and gets to know the routine.