Every time I took Algebra I had to take it a second time. Chemistry, college Chemistry, Pre-Algebra, Algebra I, Algebra II, College Algebra... oh yea and Logic (failed)
It was the last instructor who figured out that I couldn't take the test regularly... I would come in after the test and he would have 5 problems on the board and I would "teach" him how to solve them. When he found out that I knew what I was doing he told me to become a tutor. I excelled in tutoring and teaching.... though I would still fail the test if done the normal way. *shrugs* that is just how my mind works I guess.
The thing about college Chemistry... my partner was an idiot... she actually used the shower, melted our books with sulfuric acid, burned herself... and SHE PASSED THE CLASS!