Stabbing During Anger Management Class: What Went Wrong?

Road rage is no laughing matter. Up to 56 percent of fatal crashes involve aggressive driving, according to the American Automobile Association. <br><br>Given the nation's crowded streets and highways, it's hard not to experience occasional flashes of anger while behind the wheel. But it takes two to tango, and some motorist escalate confrontations that otherwise might quickly have fizzled. <br><br>Here, <a href="">from the AAA</a>, are nine mistakes motorists make that fuel others' road rage.

(CBS) Anger management class doesn't always go as planned.

Case in point: A 19-year-old woman in Bellevue, Wash. allegedly stabbed a classmate last Saturday while their class was viewing an educational video.

Police say Faribah Maradiaga used a three-inch blade to stab the classmate, who had told her to calm down and pay attention to the video, according to the Seattle Times. Maradiaga then threatened to kill the victim's family.

Maradiaga is being held in King County Jail, according to the newspaper.

Getting a group of angry people together in a room to talk about their anger? Maybe that's not such a good idea, says Dr. Redford Williams, the author of "Anger Kills: 17 Strategies for Controlling the Hostility that Can Harm Your Health."

Williams tells CBS News that he prefers to counsel people with anger issues one on one.

Group sessions "might be okay if you have really experienced group leader," he says. "There could have been an opportunity for the two people to have been coached. But in this case it seems like that may have been difficult."

Maradiaga already had a pending assault charge. Now she has two more.