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.

More than two dozen students in Gwinnett County have been disciplined for trying to start a fire with their district-issued laptops, a spokesperson for the school system said. The latest TikTok trend,

A viral TikTok trend has resulted in fried Chromebooks and school evacuations across the country this week. It could cost parents.