Is there anyway he could do a play based preschool next year? One that also let him flourish in the things he loves? My ds loved to play at that age and LOVED his preschool. His teacher were awesome! They loved ds and let him do special things like read to the class, teach Spanish to the class, give his special vocabulary words and puzzles to work on each week. It was a very science based class- with experiments and lots of questions. It really was perfect for him. Unfortunately, kindergarten was awful- lots of worksheets, book making- handwriting, and being quiet. Honestly, glad that's over.

Good luck with whatever you decide. Keep us posted!