Hi M., I waited until kindergarten with my first and second children. They really did just fine. We read a lot, played a lot, did art projects, found teaching moments in everyday life. We had play groups and friends. We cooked, cleaned, did errands and shopping together. We went to parks, museums, nature centers, zoos, science centers, aquariums. They learned a lot about life and interacting in society by taking the ride with me. Once they went into kindergarten, the teacher said they caught up quickly with whatever was needed and adjusted easily to school. They were very independent, self-guided, well-behaved, agreeble and eager to learn. My 3rd and 4th children did 1 year of minimal pre-k. They had the same up-bringing and their older siblings plus the benefit of being and learning from them. They were late in the year birthdays and were very precocious, independent and self-motivated. They also did wonderfully once in kindergarten. Follow your gut instincts. Do what feels right to you. Good luck, C. mother to 4 sons 16, 14, 11, 7. LLLL and IBCLC