Advanced Placement (AP) Exams
The College Board also offers Advanced Placement (AP) exams in various subject areas. "AP gives students the chance to tackle college-level work while they're still in high school and earn college credit and placement. Visit AP's sites to learn more and find the tools you need: exam practice for AP students, resources for AP teachers, tips for AP coordinators, and more." Start here: https://ap.collegeboard.org/