A Pennsylvania teacher who has been charged with punching a 14-year-old female student in the face hard enough to draw blood claimed he was provoked by her throwing chalk at him, police said.

Richard B. Little, 41, was charged with simple assault, aggravated assault, recklessly endangering another, harassment, and disorderly conduct, in relation to the Jan. 23 incident at Presbyterian Children's Village in Rosemont, Pa., the Daily Times reported Wednesday.

Police said a supervisor at the school was called to the classroom by Little, who said the girl was throwing chalk at him. As the accused left the room he allegedly pulled the student into the hallway and punched her in the face.

Little was escorted off campus. Both he and the student were taken to Bryn Mawr Hospital for their injuries to be assessed.

After being arraigned, Little was released on bail.

Presbyterian Children's Village, which has two facilities in the greater Philadelphia region, caters to troubled teens who have issues caused by violence, neglect, addiction, poverty or mental illness.