Well, i’ve had pretty good recall this last week, remembering most or even all of the dream I had the night before. The bad thing is, almost every time I dream of something, I dream of school… and i’m out of school. How am I supposed to practice RC if i’m not going to school on a regular basis? 
Get used to looking at and examining your hands. Try to do this once every 2 hours or so and eventually youll look at your hands in a dream. Your hands will look a hell of a lot different than IWL.
If you aren’t at school then you can try to RC every time you think of it, or see it represented somewhere, on T.V for instance. Basically any time school enters your head, do an RC. Like now for instance. 
Use MILD or autosuggestion! Try to remember that whenever you find yourself in school you must be dreaming! You don’t have to do RCs in school.
My easiest dreamsign is flying, I never do that in waking life.