A teacher at South Division High School punched by a student.The video shows a student punching a teacher several times in the head. That student, not just in trouble with the school...but also with police.A confrontation between a student and a teacher--escalates to violence.The circumstances around the fight aren't known.Police say the student was arrested at the school and faces possible charges of battery.A Milwaukee Public School spokesman says the district is cooperating with the investigation.