Boys and girls study reading, writing and math in traditional Qur'anic schools in Senegal. Generally, parents want their children to attend for at least three years to learn moral values taught in the Qur'an. Students who stay longer often become mentors for the younger children. When a student has surpassed the capacity of his or her marabout, he or she may move in order to live with another more knowledgeable teacher. Some criticize these schools for keeping children from attending modern schools. Stronger criticisms have been leveled at inappropriate use of the children for begging and raising funds for their teacher. This Dickensian life of some children is embarrassing to many Muslims and recently the government has taken steps to prevent it.