Maryland Homeschooling and Interscholastic Sports
Homeschooling and Sports Question
Can Maryland homeschooled students participate on interscholastic sports teams of their local public or private schools in Maryland?
Some states allow homeschooled students to participate in public school programs, however you need to check with your state high school athletic association for its current policy.
HSLDA has some written some helpful information on the homeschooling and interscholastic sports subject. Here is another article on the Maryland's State Athletic Association Rules for Private Schools and Homeschooled Students.
I hope this helps!
PS Maybe someone from Maryland will post a reply and provide you with additional information from their experience.