North Carolina middle school makes students put phones on 'lockdown

Being 13': What It's Like to Be a 13-Year-Old Girl Today - The New York Times

Verbal threat made to Tipton schools prompts Tuesday lockdown

Zebulon Middle School students released early for Code Red lockdown after social media threat - ABC11 Raleigh-Durham

Northern Michigan high school placed on lockdown after teen displays pistol

Kempsville Middle placed on brief lockdown after 'threatening phone calls'

Lockdown Coverage

Threats lockdown Granite Hills High School, News

Code red lockdown lifted at Wakefield schools in Raleigh

South Carolina: School on lockdown due to 'electronic threat

Zebulon Middle School students released early for Code Red lockdown after social media threat - ABC11 Raleigh-Durham

Kalamazoo-area school on lockdown after student heard saying they 'had guns'