That's why I said assuming and my assumption was wrong. Sorry about that.
Have you already taken Drug and Alcohol Abuse, Here's to your Health or Intro. to Computers? There's a wealth of posts on those courses. I've taken Drugs and Health and thought they were very straightforward.
I think the Lit Instruction class may be quite hard. I know I've seen some posts where people have failed it. Does Excelsior offer a guided learning program?