A 5-year-old Illinois kindergartner is a Mensa member.
Mensa is the largest and oldest high IQ society in the world. It's an organization open to people who score at the 98th percentile or higher on a standardized, supervised intelligence test.
This boy knows every element on the periodic table, every state in the country and every country in the world. He reads entire books-- and, started reading when he was 18 months old.
He is having trouble in his new school because, "He's so far advanced than the other children that he is bored and he gets into trouble."