Two weeks ago, Massachusetts high school senior Eric Cox thought she was doing the right thing by coming to the aid of a friend who’d been drinking under-age. When that friend called for a ride, Cox didn’t hesitate to drive and keep her intoxicated friend from getting behind the wheel. Although the police cleared her of any wrongdoing since she wasn’t the one drinking that night, Cox’s high school was decidedly more strict:

The local CBS affiliate in Boston reports that the school found Cox in violation of its “zero tolerance” policy against drugs and alcohol:

“She didn’t do anything wrong. She did what she thought was right, and I’m very proud of her,” Erin’s mother, Eleanor, told WBZ-TV.

What do you think: Should a school’s “zero tolerance” policy extend to designated drivers by association?