Pakistan is still trying to get a grip on its madrassa problem

ISLAMABAD, Pakistan — In a country that has more than 20,000 religious schools, Pakistani investigators say the madrassa where Tashfeen Malik studied the Koran doesn’t stand out as being especially radical or linked to past violence.

But experts here don’t think they can say the same about every other madrassa in the country. Religious schools provide Koranic teachings to 3.5 million children and young adults in Pakistan, and officials and analysts believe some small but significant number of them act as incubators for radicalism.