FYI, I am a lazy bastard, and spent the last two years of highschool getting shit grades and almost never doing homework or studying for exams, but I never got less than a B on tests, simply because I derived most of the exam problems from scratch or bits of memory, instead of studying and memorizing things like my classmates. Out of humility, I'd like to think that I'm not that special, and any one of my classmates could have done the same, but I somehow doubt that.
OK. I totally believe you have a 160 IQ now.
Seriously, the smarter you are it seems the more bored people are in high school. In my experience it seems those that have the best grades are the ones in the 120-130 range. I was just barely above that so my grades were OK but not great. I did not care that much. I was shocked when I graduated with honors. I was like, "How did I do that?" I was not really trying to.
I felt a little guilty then. I often think if I had only applied myself I guess I could have graduated at the top? But I did not care that much really. In fact, after taking one AP class I realized I was working harder for an "A" and it would be much easier to just take a normal class, not study at all and get an A or B. I guess I was a little "lazy" too.