If the student is not on your district managed computer, that might cause the issue.
https://support.google.com/docs/answer/7634943?hl=en
From: David Bilmes [mailto:dbilmes@sbcglobal.net]
Sent: Monday, March 30, 2020 10:28 AM
To: CASL_L <casl-l@mylist.net>
Subject: [CASL-L] Google Quiz question
I have a teacher who assigned his students a Google Forms Quiz, which he set up in Locked Mode, so they can't open any other tabs on their school Chromebook while they're
taking it. However, he's gotten a number of messages saying:
Quiz Reopened by (student's name)
(student's name) opened the quiz March 30 at 8 a.m.and the reopened it March 30 at 9 a.m.
You're getting this email because Locked Mode is turned on for this quiz.
Does anyone know why he is getting these messages?
David Bilmes
Oxford High School