A more extensive study of the madrassas (Islamic schools) in Pakistan found that only about one percent of the nations children were attending them. Most of the Islamic schools were concentrated in the Pushtun (tribal) areas, where they attracted as much as 7.5 percent in some districts. Earlier nationwide estimates ranged from 10-33 percent. The madrasses teach a conservative version of Islam and stress the need to fight infidels (non-Moslems). Many Islamic terrorists got their start as madrassa students.