The U.S. Department of Education’s Civil Rights Division is investigating allegations of racially motivated bullying at a southern Illinois school.  Wolf Branch School District 113 Superintendent Scott Harres confirmed Premissa Acoff filed a discrimination complaint against the school district in the fall.  Harres says the district received the complaint, responded to it and later answered questions asked by the Education Department.  Acoff and her husband, Dwayne Acoff, say their son, who is black, was the target of racial slurs, two physical altercations and cyber bullying by white classmates at Wolf Branch Middle School.  The Belleville News-Democrat reports Harres says as soon as the bullying was brought to the attention of officials, it was dealt with.  Premissa Acoff says bullies have stopped targeting her son for the most part.