Thank you for all the responses. I finally dug up some Maryland state laws and it looks like Maryland specifically is not open to the idea.
"Can a student who is home schooled participate in other aspects of the instructional or extracurricular programs that are offered by a Maryland public school?
No. Present regulations indicate no provision which allow homeschooled students to participate in courses or activities that are offered by a Maryland public school other than the standardized testing program. [COMAR 13A.10.01]"
Oh well, it was worth a shot.
