Mark Keierleber

Investigative reporter, The 74

Mark Keierleber is an investigative reporter at The 74. He specializes in covering school safety and student civil rights and is the author of the biweekly School (in)Security newsletter.

Watch Potty

Vaping Is ‘Everywhere’ in Schools—Sparking a Bathroom Surveillance Boom

Nov 19, 2025 5:00 AM

Lockers

Meet the Hired Guns Who Make Sure School Cyberattacks Stay Hidden

Feb 4, 2025 4:00 AM