Fourth-smartest state in America: Utah
Just 16.3% of Utah high schoolers watch three hours or more of TV per day -- the lowest rate nationwide.
The Beehive State also ties Iowa for sixth place in terms of how many adults have high school degrees (90.6%).Lastly, Utah comes in 13th place in two other categories: the percentage of young people in college (68.1%) and average SAT math scores (566 -- a tie with Oklahoma). Martinez-Aleman theorizes that just as with Wyoming, a small population makes it easier for Utah to spend lots of money per student. But also like Wyoming, few Utah teens took the SAT this year -- just 6% of graduating high schoolers. As noted, that can skew a state's average score upward.