Skipping class undetected for a game of ultimate Frisbee might become a thing of the past as more universities adopt mandatory-attendance policies and acquire high-tech trackers that snitch when students skip. At Villanova University, student ID cards track attendance at some lectures. Administrators at University of Arkansas last semester began electronically monitoring the class attendance of 750 freshmen as part of a pilot program they might extend to all underclassman. And at Harvard, researchers secretly filmed classrooms to learn how many students were skipping lectures.

January 13, 2015 ・ From The Wall Street Journal