Thousands of schools across U.S. lack doors that can be locked from inside
03:04
1 in 4 public school across the United States lack interior locking doors, meaning teachers are required to go into the hallway to restrict access to their classrooms. NBC News' Suzy Khimm reports on the school safety and whether more schools may receive new locking mechanisms after the Uvalde shooting.July 12, 2022
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