PBS NewsHour

Last school year, 4 million students were on lockdown

Clip: 01/27/2019 | 4m 38s

During the last school year, more than 4 million students participated in at least one lockdown, most often in response to a perceived gun or violent threat, a Washington Post report found. And these perceived threats, psychologists say are causing students trauma. Reporter John Woodrow Cox joins Hari Sreenivasan for more.

Aired: 01/27/19

Rating: NR

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