These exams include UExcel Exams, IT Certification Exams, AP Exams, and CLEP Exams.
Another thing to look at if you want to save money on college costs is using AP courses and CLEP exams as both a way to get in high school core requirements while earning college credits through the exams.
Find out which, if any CLEP and AP credits the university accepts and work on those first.
The CLEP exam is intensive, so you'll find that in studying for the exam that your high schooler self teachers most of the core material he or she would have learned in a classroom setting.
Knowledge and learning can also be easily applied to CLEP exams.