Hi!
I'm also trying to use Moodle for exams at my university, but I would like students to be able to access reviews only inside the lab, so they won't be able to copy the questions (and pass them around forever and ever).
I stumbled upon this reply: https://moodle.org/mod/forum/discuss.php?d=336300#p1355265 and was able to use your suggestion of calling the prevent_access module to add IP restriction, but it also blocks access to review if the quiz has been closed.
Would there be a way to check only the network address, and not the other access rules?
Thank you very much!