Percieved intellegence

Hi all, today I got bored and made this quick graph in paint. 

The funny thing is, I've actually had people (one person) complain to me before about getting a 780 for their math SAT's before, and I've actually heard someone dancing through the hallway saying 'straight B's! straight B's!' 

I'm sorry to say I don't know what the values for the X-axis actually are. Stupid me.