I am a rising sophomore taking BC classes, but I would like to challenge myself and take AP classes. However, my school doesn't offer any.
There are many online schools that offer AP courses that are accredited by CollegeBoard. I'm taking a couple through the EDX portal which is a consortium of top elite colleges that offer very inexpensive classes. Since they are so inexpensive I'm not sure they all give you an HS credits or an equivalent certificate of completion but certainly, if you are on a budget they are better than just self-studying for the AP tests. The ones offerest by UC California schools, Northwestern and Johns Hopkins are probably the best resources ones and 100% legit and have the most offerings. AP classes are not canceled unless your school is canceled if you live in the US. Good luck
https://cty.jhu.edu/online/courses/advanced_placement/
https://www.ucscout.org/courses
https://www.flvs.net/flex/courses#highschool/9
https://www.apexlearningvs.com/product/ap-biology/
https://www.excelhighschool.com/online-advanced-placement-courses
https://www.aphomeschoolers.com/
https://www.ctd.northwestern.edu/program/advanced-placement-ap
So for AP the only way I know of is online AP classes and that may be reserved for the summer but I’m not sure.
But as others have said their are other options but one they forgot about was CLEP. Essentially CLEP is a pure test taken at a college (not high school) that offers it. The thing is I’m pretty sure you have to take it at the college and the credit only applies for that school and is untransferable. And that gives college credit.
But if you want rigor take as many honors as is feasible (if available) and you should have good rigor as you are evaluated in the context of what your opportunities are at the high school.
Hope this helps and comment if you need clarification.
Also if I got something wrong with CLEP please excuse me as I am not very familiar with it.
If your school doesn’t offer any AP classes, you could see if you can take classes at the local community college for concurrent enrollment. You could also try self-studying for some AP classes and take the AP Exams.
To keep this community safe and supportive:
concurrent or dual enrollment in CC courses not the same as AP courses because a.) the course material is different and b.) none of them are accredited by College Board, c.) many elite colleges will not automatically consider giving college credit for them if you get an A. On the other hand if you get a 5 in AP Physics C most colleges except MIT/CalTech will give you full college credit for that course or tell you fulfill that requirement and can move on to take someting more challenging.