Um, I'm not sure if I went through highschool... I did get my HiSET with high scores, but on school itself, I dropped out. Too many learning disabilities on top of a poor memory that forgot everything after finally passing a test for like the third time.
I was also homeschooled, so keeping track of grades was hard. Most I know was my last grade in Math was sixth grade, which I dropped out after going through the whole year doing fairly well, then took the end-of-year test feeling confident, only to get the test results back saying that I failed the entire year. I don't know if that was highschool, but my only teacher was my Mom and she was by my side and even encouraged me to drop out because she knew the toll of constantly failing was taking on me.