Its the largest donation by someone as young as him and no one has ever donated that much to a cause that wasn't their own charity. http://mashable.com/2010/09/24/mark-zuckerberg-on-oprah-video/
pretty good of him, it is an obvious PR stunt to counter the negative portrayals of him in The Social Network......
I thought he put $100m into a trust fund and the schools only received the interest that account generated.