Bret Meuli, the principal at Canon City High School in Colorado, calls up an app to show what students are using to hide photos on their cellphones, in Canon City, Colo., Nov. 6, 2015.
Bret Meuli, the principal at Canon City High School in Colorado, calls up an app to show what students are using to hide photos on their cellphones, in Canon City, Colo., Nov. 6, 2015. NIKCK COTE NYT
Bret Meuli, the principal at Canon City High School in Colorado, calls up an app to show what students are using to hide photos on their cellphones, in Canon City, Colo., Nov. 6, 2015. NIKCK COTE NYT