When asking if he could simply take the class at the High School next door, I've learned that since he is not labeled GT, certain services are not available to him...
Who, exactly, did you ask? Sometimes I've found that if you ask one person and get a response you don't like, you can simple ask someone else and see if they give a better response. It certianly looks like your son is documented to be a good candidate for Honors Geometry. Hopefully this will work out, one way or the other.
I'm also trying to figure out what the 'non-honors' class of geometry at the middle school would look like - accelerated but non-gifted 8th graders taking a 10th grade class?
Best Wishes,
Grinity
