Well, all of my marks always seemed to be within the same general area, so there's not really any big subject that I was best in...
Though, my math mark always seemed lower than the others, but I blame that on the way my teacher marked (she marked hard and made things out of four, so if you only made two mistakes you got 50%. It was ridiculous.)
Although, from off the top of my head, French and Drama were generally my best, plus my Canadian History course...
But really, if you want to study, take the advice of Neonbob and comadorcrack.
You will not be able to study to the best of your ability if you stay on this site.
Trust me, I had problems even when I was only lurking here.
Log off, and you will find it that much easier to concentrate.