I was pretty screwed up in high school, got kicked out, let back in, kicked out again, got in some sort of trouble over and over again, went to a continuation school. I didn't even know what a grade point average was, or that I had one, let alone a SAT test. Nothing to compare.

Well, this has never happened to me but, I have been around people who constantly had to bring up every accomplishment in their lives - over and over and... It's okay to talk about yourself but, there is a fine line between being confident and just plain borish bragging. In most cases, I think the ones who talk the most are the least secure. Whatever the cause and depending on your tolerence, it can affect you as being anything from irritating to a bit pathetic.