There are several online schools like Crimson Global Academy that offer additional AP classes with world-class teachers. Remember it is important to score well on your APs and not just take too many classes.

The recommended number of AP courses/exams to take varies based on the kind of universities you’re hoping to apply to. A 2013 study conducted by admissions officials at the University of North Carolina—Chapel Hill found that students should “pursue at least five college-level courses" during high school; however, it’s important to keep in mind that since the study was conducted, acceptance rates have decreased significantly and the competition is more fierce than ever.