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School lockdown drills have become common — experts say they could be better
Before the Columbine High School shooting, schools prepared for fires and natural disasters. After the 1999 massacre, states enacted lockdown and active shooter drills.
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Kerry Breen is a news editor at CBSNews.com. Kerry holds a masters' degree from the New York University's Arthur L. Carter School of Journalism. Now based in New York City, Kerry started her journalism career covering local events in New Jersey. In graduate school, she began covering the overdose crisis in New York City.
Before coming to CBS News, Kerry covered current events and trending news at TODAY Digital at NBC News. While there, she produced a month-long multi-piece project on substance use and harm reduction, and reported on a Magnolia Network scandal that was picked up by multiple media outlets.
Before the Columbine High School shooting, schools prepared for fires and natural disasters. After the 1999 massacre, states enacted lockdown and active shooter drills.
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