As quoted in:

Dobo, Nichole. “Worry less, learn more about your child’s laptop or tablet.” 30 October 2018. The Hechinger Report/New York Times.

Assume no privacy on a school-owned device. Digital monitoring systems probably track everything students type into the computer including the websites they visit, said Douglas A. Levin, a school security expert. “Different school communities may have different viewpoints on that,” he said. “But it shouldn’t be a secret.”