My kids too have been home with me since birth. Where do you live, I'm in Bloomsburg and there are many preschools and most aren't required full day. The one my children go to is a choice of 3 sessions, 9-12, 12-3 or 9-3, and you choose the # of days they go, minimum of 3 sessions a week. Since kindergarten is half day for our school district I chose to send my daughter half day. Bloomsburg school district however is full day kindergarten and so my daughter has some friends that stay all day just to prep them for kindergarten. I would check into kindergarten in your area and decided what you are going to do from there. And you may be surprised, my daughter would stay all day if I let her, she loves the preschool, she meets new friends, it has more a structured setting, she gets new snacks, they play outside, there are birthday parties, just to name a few of her favorites. Initially I too would have thought all day would have been too much, but about 1-2 weeks into preschool she would have been happy to stay! Especially since she has many friends that stay now and she would love to stay with them. Our preschool also has 3 rooms, because it works as a daycare before and after preschool hours. So my daughter actually did about 6 months in the 3 yr old room to just get her an idea of what preschool would be like, its less structured. She loved and was sooo ready when preschool started the following fall. There is also a "baby" room that takes 1-3 yr olds and my son gose in 2 days a week just for a change of rountine and to socialize, his room is mostly gross motor oriented, but they read stories and sing songs. Also, there are many preschools or daycares that do "camps" over the summer when parents still work. You could think of sending him to a few days here or there depending on the requirements, just to get his foot in the door and feel it out! You may be surprised! Good luck and any questions feel free to ask. J.