If you son is there to socialize with agemates, then color he must. I would suggest finding a different class - cub scouts or karate for socialization or hire a spanish teacher and invite a few selected kids who are more likely canditates for both Spanish learning and socialization.

I think your instincts that it would be hard to ask for more without offending the teacher are correct. It just plain may not be possible.

Best Wishes,
Grinity

Coaching available, at SchoolSuccessSolutions.com