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Two Years After Parkland, New Concerns Over How Lockdown Drills Impact Students - NBC Nightly News.

Two years ago today, 17 students and staff were killed in a shooting at Marjory Stoneman Douglas High School. School lockdown drills are becoming routine across the country, but a new report calls the drills anxiety-causing to students and lacking in research to back up their effectiveness.
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Two Years After Parkland, New Concerns Over How Lockdown Drills Impact Students | NBC Nightly News

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