Thank you so much to everyone for their advice, suggestions, and links!!!
@ucbalumnus: Thanks for the link–I have heard of it before, but never considerd it could help me find community colleges with certain classes!
Just saw your other post: thank you for the catalog link! The classes look facinating, and I’m happy to see many of them still have space. 
@ItsJustSchool: I definitely will keep AoPS, the Math Circle, and Ross in mind as I look at other options. Thank you for all of the suggestions and for the youtube suggestion.
@Ynotgo: Thanks! Maybe I’ll see your son/daughter’s team at competition–I wish them luck! I will look into math circles more, and will definitely look into the extension program.
@Mom2aphysicsgeek: Thank you for sharing your experience! It’s great that your son was able to take higher classes at a college, and I hope to find one that will allow me to do so too. I’ll also do more research on SOHS, AoPS, Math Camp, and SSP. I’m leaning against summer programs and competition math for various reasons, but I’ll certainly not rule them out completely.
@N’s Mom and @TheDidactic: I’ll look more into all of these programs, thanks for the suggestion!
@meow15: Thank you for the links–they’re what I’ve been looking for, and extremely helpful! I will definitely be looking into them more.
@bookwork: Thanks for the note. I likely won’t graduate early (just don’t feel comfortable with it), but my mom is encouraging it and I’ll reconsider it next year in case I change my mind.