The assistant principal at Henry A. Wise Jr. High School uses 140-character messages to help mentor, monitor and mediate fights at the Upper Marlboro school.
Dec. 20, 2011 Henry A. Wise Jr. High School junior Brandy Horne, left, laughs as Assistant Principal William Blake, right, tweets birthday greetings to her after finding out it was her birthday in Upper Marlboro. Blake uses Twitter to help quell fights at the school, 60 percent of which start due to comments made on the micro-blogging Web site, according to guidance counselors. Mark Gail/The Washington Post Buy Photo