Any test of students' abilities whose efficacy can be substantially weakened by leaking is, from its very design, just not a good test. Even my HS teachers (wh

Any test of students' abilities whose efficacy can be substantially weakened by leaking is, from its very design, just not a good test. Even my HS teachers (who designed their entire curriculum -- front to back) were hip to this. They said "Yeah, we know some students have photocopies of midterms from previous years. But we mix up our questions enough that we're not too worried about it. Plus, a student who would waste his or her time with rote memorization just isn't going to understand the material conceptually, and will certainly bomb the essay questions." (What? You're not letting your teachers design their own curricula? Or they're not able to? Then you have a much worse problem on your hands than students trading answers to multiple-guess exams).