it_is_2day, I haven't had the time to read through all the responses you have received but wanted to provide personal experience with a super small school. My dd5.5 has been attending a very small private school (less than 35 kids from age 3 to 8th grade) with mixed-age classrooms since she was 4. It is not specifically for gifted kids but because of the school's philosophy and size, it tends to attract students that are not NT in one form or another (sorry, don't know how else to put it). She is in a room with 7 other kids ranging in age from 5 to 11. She is the youngest as she was grade skipped. We love it. She gets individual attention and the teachers are meeting her at her level across the board. She gets a lot of time outdoors and for self-initiated projects. It is true that the school does not have subject matter experts and has no fancy equipment (like some other private schools that have mac computers, nicely equipped gyms, etc). But it is working great because at this age,I want my kid to enjoy learning and feel good about asking questions and exploring. I am not too concerned about how much academic stuff she learns as she is already way ahead of her grade level. That said, I have been pleasantly surprised at how much academic stuff she is learning just by virtue of being in a room with older kids. I don't know at what point my dd will outgrow this school but I have decided to enjoy it till it lasts. Hope this allays some of your fears about super small schools-they can work as long as the teachers and other want to make it work.