Third-dumbest state in America: Texas The Lone Star State stands virtually alone when it comes to the proportion of an area's citizens who didn't finish high school. Texas ties California for dead last among the 50 states and the District of Columbia in terms of residents 25 or older without high-school educations -- 19.3% for both states. The Lone Star State also places 10th from the bottom in terms of young people attending college, with just 52.8% of 18- to 24-year-olds enrolled in post-secondary schools. Similarly, a 499 average SAT math score places Texas at a below-average 28th place nationwide, while 36.3% of the state's high schoolers watch three hours or more of TV daily. That's the 11th-highest rate nationwide. Second-dumbest state in America: Georgia Honey Boo Boo's home state falls in the bottom quartile of performance in all four measures analyzed. Georgia gets particularly low grades in two areas we studied: TV watching among high-school students and the percentage of young residents attending college. Just 50.2% of 18- to 24-year-old Georgians are enrolled in higher-education institutions, the fifth-lowest proportion for any state or the District of Columbia. Similarly, Georgia places fourth-worst for TV viewing by students, with 39.2% of high schoolers spending three or more hours a day in front of the idiot box. The Peach State's students also averaged just 489 on the SAT math test, placing them fifth from the bottom nationwide. Finally, 15.7% of Georgians 25 or older lack high-school educations -- the 11th-highest ratio nationally. Dumbest state in America: South Carolina The Palmetto State finds itself at the bottom of the heap due to near-last-place results in all four measures we studied. South Carolina did especially poorly in the area of television watching by high schoolers, with 39.7% of students watching at least three hours of TV per day. Only Louisiana and Mississippi rate worse. Similarly, the state comes in nearly last place in the percentage of young people enrolled in college. Just 49.9% of 18- to 24-year-old South Carolinians attend institutions of higher learning -- a level so low only Montana, Nevada and Alaska trail it. The state also places near last nationwide in terms of SAT math scores. South Carolina students scored 488 on average in 2012, the fourth-lowest showing among all 50 states and the District of Columbia. Lastly, 15.9% of South Carolinians never graduated high school -- the 10th-worst rate nationwide.