A., if I had to do it all over again, I would send them to preschool, just so they can make friends and have some socialization, and learn a few new things. But, I would definitely hold them back when it comes time for kindergarten. My boys are ages 12 and 10. I sent my 12 year old to kdg when he turned 5, and he was OK with it, but my youngest was definitely not ready for school. I wish I would have kept them both at home and just enjoyed them another year, and spent that year playing fun learning games. I held my youngest son back in 1st grade another year because I felt that would help him to catch up, and it did but he still struggles in the 4th grade. Also, both my boys were late summer babies. Good luck, I struggled with the same decision you are.