Educated Kurds getting better life standarts, but education is not much popular in the Kurdish society, although its getting better recently I think(thanks to the many campaigns that encouraged the education of the Kurdish children by small economical donations from the people), PKK is firmly againts the Kurdish children being educated in Turkish schools, thats why they kidnap teachers, damage schools etc.
Also TurAr is right about the investments, eastern regions being seen as conflict zone by the investors, nobody would want to risk their business, its mainly about the private investments, I2m firmly againts the thought of that "government discriminated the eastern regions in devolepments" western regions were not different, many of them still not different.