A study carried out by the Counter-Terrorism and Operations Department of Directorate General for Security over a sample of files about people convicted of being a terrorist under Turkish laws including 200 militants from the organisation and the four other currently active Islamic organisations (see reference 1) 2.5% of the members are aged 10 to 14, 72.5% 15 to 24, 17% 25 to 29, 6% 30 to 34, and 2% 35 to 64. University graduates make up 22.5% of the members, high-school graduates 40%, secondary-school graduates 14%, primary-school graduates 19%, literate non-graduates 2.5% and illiterates 1.5%.[8]