TikTok is full of entertaining cat videos, humorous dances, and yes, even challenges -- the famed ice-bucket challenge has returned and is promoting mental-health support. But now a dangerous TikTok challenge is spreading through the short-form video app and through schools across the US.

A Texas district has joined a growing list of U.S. schools warning of a dangerous social media trend encouraging students to destroy Chromebooks.

Firefighters and school districts in Colorado are warning about a potentially dangerous TikTok challenge that has gone viral.