Thanks acs -
What you said is helpful and at the same time all the more frightening

My son has been in some kind of group/school situation since he was 18 months old. Most of these expereiences have been really positive for him (see below) I think he is mature enough to handle K now. What I am worried about is that he will get to some regular school next fall and they won't challenge him or accomodate him.
I know, I know I am getting ahead of myself.
And, you are right that as mature as he may seem to me now, he will be even more mature next fall. That is ultimately a good thing. He may be able to manage his frustrations better.(ha ha) And hopefully by that time I will know where is LOG his at and make sure that his new teachers understand him.
Thanks for listening
- EW
background:
0-18 mos. home with mom fulltime.
18-24 mos: parent created co-op. 4 days/wk 5 kids, one parent always present and one full-time bilingual teacher. garden, chickens lots of outside-get-messy time hands on play. stomping in rain puddles, walks to story time at the library. the works!
24-27 months: small playbased preschool fulltime. beautiful experience. supportive community. caring staff. mixed age 2-6. DS was the youngest. within two weeks after starting he knew everyone's names including staff, kids, older siblings, parents, h.s volunteers, who drove what car etc.
then we moved
28-29 mos: "academic" preschool fulltime. Put in the two year old classroom. other kids could not talk like my DS. activities were sparse and art projects were identical for every kid! (eg for Hallowwn the teacher would cut out the shape of a ghost and the kids would paint two dots for eyes and glue it to an orange sheet of paper. The teachers really did 95% of every art project) very understimulating for him. school admin would not budge and put him in with the threes because he wasn't all the way potty trained
30 mos to present (4y3m). Caring Montessori, full time. Not too rigid. about to start back for the fall 3rd year in same class. Has been great.
also: summer 08. fulltime camp at dynamic children's museum with weekly themes such as art, theatre, music, coooking, etc. . some weeks classes were mixed age. Had a ball.