I assume you’re an adult? How would you feel about repeating Kindergarten?

I understand the “what about socialization” motive. The problem is this kid is so crazy smart, there’s zero chance he’d be able to relate to his peers. He will face a lifetime of difficulty because of his great intelligence. This is his burden. Holding him back won’t solve the “socialization” issue.

It’ll actually make it worse. Besides his parents have him karate and other activities that allow him to get some socializing.