Jacob Barnett, tutor to his classmates at Indiana University-Purdue University Indianapolis

http://www.dailymail.co.uk/news/article-1369595/Jacob-Barnett-12-higher-IQ-Einstein-develops-theory-relativity.html

http://www.wtsp.com/news/watercooler/article/183944/58/WATCH-12-year-old-prodigy-teaches-Calculus