This spring, a 10th-grade honors English class was supposed to be studying Khaled Husseini’s acclaimed novel about two boys from different social classes growing up in 1970s Afghanistan. On April 27, teacher Brooke Bowman sent a letter to parents explaining the value of the 2003 best-seller as a teaching tool while warning of its mature content. In the scene in question, a servant boy is beaten and sexually assaulted by an older boy from a wealthier family.