They will not make him skip kindergarten. LOTS of parents hold their children back (especially boys) and start them in kindergarten at age 6. Usually it is because the parents don't think their kids are mature enough yet to sit in the classroom all day, pay attention for that period of time, follow directions, etc. (not because they don't think they are intellectually ready). If you don't think he is ready for full day kindergarten, then I would definitely put him into a pre-K program in the fall. He will benefit from that experience and it will greatly help him in the kindergarten classroom the following year. From working in elementary classrooms, I will tell you that you can ALWAYS tell which kinds have never been away from their parents before. I would also talk to your son. Does he want to start school? Does he think he's ready to start school full time or would he rather go just a couple days a week. Not that you should base your entire decision on what he says, but at least let him have some input. Also, are all of his friends starting kindergarten in the fall? Will he feel left behind next year? Lots to consider...good luck!