PESHAWAR, Pakistan — Rifts are growing among Taliban officials over the group's decision to ban girls from secondary education, leading at least one minister to leave Afghanistan and forcing families to move so their daughters can continue their schooling. As religious police patrol large parts of the country to ensure that rules are enforced, the restrictions have become so repressive that some senior members of the militant group have called for them to be rolled back in recent months, three Taliban officials told NBC News, which agreed not to identify them so they could speak candidly.