Comment by dr_orpheus

> grade book system being exposed

In our high school they didn't expose the gradebook in that you could get in and change it, but we were able to see everyone else's grades. Teachers would post grades for their class and "obscure" it by posting it with the student ID (you were only supposed to know your own) next to the grade. But when the posted, the entire list was still in alphabetical order so it wasn't hard to figure out everyone's grade and student ID.

And the cherry on top of this was that all the students' passwords were their student ID.