The Markup, now a part of CalMatters, uses investigative reporting, data analysis, and software engineering to challenge technology to serve the public good. Sign up for Klaxon, a newsletter that delivers our stories and tools directly to your inbox.
A few months ago, a high school English teacher in Los Angeles Unified noticed something different about his students’ tests. Students who had struggled all semester were suddenly getting A’s. He suspected some were cheating, but he…

