it proves she's an idiot
my friend in high school who never ever did homework and used to smoke weed with me everyday while at school got a 1560 and I got a 1200----------to get an 850 you reallly have to be Trying to be stupid 
When you can run a city or a state and end up being chosen for vice-president, then you can lecture somebody on how much of an "idiot" Sarah Palin is.
it does give insight into the inherent intellectual capability- and somewhat into the focus and discipline of a person.
i.e. some clever people who dont study still do quite well, and other not so clevers who work hard can do very well.
BUT, if you do crap, you are either dumb/average and slack, or work really hard and a thick head.
You dont get smarter as you get older- you learn more, but you dont necessarily retain it. Thats why IQ tests apply from age 15 onwards and dont change anty more than 5% throughout an adult's life- at least until senility.
So in summary, if your IQ indicated that you're a moron when you do your SATs, then you'll always be a moron.
You post this mess, yet you have the gall to call someone else a "moron". IQ tests don't mean JACK in the real world. There are many people with high IQs who can barely balance a checkbook. They have lots of "book" smarts but their common sense is out the window.
All Palin has done is graduate from high school and college, become a two-time mayor, and become the FIRST female governor of Alaska. In less than a month, she could become the first female VP in history. What she's accomplished politically in such a short time is, by any standard, impressive.
Hard work and tenacity will get you farther in life than a high IQ.