I went and got my GED last year. I dropped out in 9th grade. All of the instructors of the classes told me because I dropped out in 9th grade I would most likely have to take classes for at least a year. I told them to just give me the placement test and I will prove myself. I ended up acing the placement test then getting a 3780/4000 on the real test. I didnt do any studying, took a total of 2 weeks to get my GED. I am not saying you will do this, I am just saying if you have a general knowledge for most things, you should be able to get in fairly quickly with minimal classes. By the way, I took it in NY, so IDK if its harder/easier than SC...