So a lesson from when I was young and stupid: If you make fake data, it's often advantageous to make it obviously fake data. If, in a fit of boredom, you decide to do something clever and e.g. generate plausible names and birthdates for fake students by using government lists for the most common names and surnames for people born that year, and you e.g. hypothetically leave 6 pages of no-actual-human-involved fake data sitting on an office printer, you might hypothetically end up in a very awkward conversation with the local person in charge of regulated data breaches.