Ps:Look what's going on in India, uneducated politicians are involved in crimes, rapes etc.
I doubt getting a degree would have a direct influence on criminal behavior. Frankly, I'm a bit cynical here: in my opinion, both highly and poorly educated people are susceptible to certain criminal activities, particularly corruption, when they become politically powerful. In fact, the even more cynical side of me would dare say to some it's a good motivation to actually become politically active in the first place. Why would an education change that?
Still, ideally speaking, the leader of a country should have experience in the political field, and have enough of an educational background to avoid being made to look like a fool by others. I personally prefer experience over education in this regard. Someone who climbed the rungs of the political ladder is far more proficient in the skills needed to run a country than someone with a Phd.