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[scarlet_begonia]

Has anyone ever given 2 or more different take-home exams that cover the same topics to a class, as an attempt to reduce cheating?  Same difficultly levels and format.

In the age of the "grievance", could there be any "problems" from doing such a thing?  The exams are open book and open class materials, etc. 
For a grad class if that makes a difference.

Thanks.

[anakin]

I do and have done this many, many times.

Tell students up-front what you're doing. The purpose is not only to reduce cheating, but pedagogically, to get as broad a picture of what your students are learning and not learning. Reassure them that you will scale the score of the lower-averaged group to match the higher average, if that indeed happens.

As long as you explain the expectations - both what you expect from them and they can expect from you - under the two-different-exam model, and you keep the scoring equitable, you have a highly stable and (if necessary) defensible position as an instructor.

Also, me personally, and especially with a grad class, I would not even say the part about reducing potential cheating to them. Focus on the pedagogical benefits.