I don't think you need to make such major decisions now about school. Also, your DC CAN be happy in a group of friends - of various ages...in addition to the play-based schools suggested in your earlier thread, you might want to check out Montessori schools.
DS did an achievement test at age 4, because he needed it for a program.
I have 2 HG+ kiddos (one is currently a DYS)- they are happy, they attend school, and they play with other kids...really - I would try not to worry and focus on enjoying this time with him. Time will fly! Also, there is hope for happiness, friendship, and learning!
