[roadnottaken]

So if, for example, a student hacks into the professor's computer and steals the test-question to study from, this is OK as long as it wasn't expressly forbidden? I'm not saying they should only study from materials that are provided... but in this case they were clearly using materials that they shouldn't have had access to.

[chc]

Some actions have default moral and ethical values. Hacking into somebody's computer is assumed by default to be bad — it would be bad even if they hadn't intended to use the test for their class. Most actions, such as reading a sample test, are not as clear cut.