The student chapters of ACM and IEEE-CS at my university kept test banks with full knowledge of the CSE and EE departments. It was allowed by the honor code as

The student chapters of ACM and IEEE-CS at my university kept test banks with full knowledge of the CSE and EE departments. It was allowed by the honor code as long as the tests had previously been used. The university basically neutralized the advantage Greeks had with their test banks by requiring professors to come up with unique tests each time.