Your idea is horrible.
Educated people already vote much more often than uneducated.
In 2004, 23% of people who hadn't finished 10th grade voted, whereas 77% of people with advanced degrees voted. 52% of high school grads who didn't go to college voted and 72% of bachelor degree holders voted.
http://www.census.gov/population/soc...04/tab05-1.xls
Where'd you even get this idea? From your subjective view that voters are uneducated? Take a look at the statistics. The people you want to restrict from voting already don't vote.