New to School

So I find myself at that strange stage of parenthood where my oldest is headed off to school. No not college but Pre-k. I am so nervouse for him. Did I teach him everything?
Will he be the wierd kid? Will he be shy? Will he be willing to learn? Will he make friends???? Uhh I hope so. I want him to experience it all, including the heart breaks. No not the heart breaks.
Did I do it right? How do you know if you did?