dont worry it happen to most of the kid, the drama will last for awhile. you had to let it go, after they get used to it they will be fine. I boy cried each time I drop him off for almost 1 month. the cry didn't last long, after I left the centre. I hide myself at a corner to check the happening after I left. To my surprise, the moment I am gone in less then 5 mins after the teacher console him, he is playing with children around him forgetting everything happening earlier..