It happens so often in classrooms that it’s almost unremarkable. A student sends a text during class, plays a video game on an iPad or mouths off, drawing a reprimand from the teacher.

Then what?

At Spring Valley High School in Columbia, S.C., a similar scenario ended Monday when a white sheriff’s deputy — summoned after an African American student refused to leave the class — yanked the student from her desk and threw her across the floor.

Read more in the Los Angeles Times.