Go back in there and fight for a full grade skip, with an additional year in Math. Put it in writing. Go 'up the food chain' step by step. Play up how dissapointing it is for DS to get no badge because he can't Improve!!!! If DS cried about it - play that up - social-emotional means so much to schools.

Is DA still an option?
Love and More Love,
Grinity

Coaching available, at SchoolSuccessSolutions.com