4-5 hours
In theory the standard required to pass an exam should be much the same from sitting to sitting, so in that case it doesn't really matter if its a relatively easy or hard exam (as the pass mark should vary to compensate), the more important question is if its a fair exam - i.e. a true test of knowledge and understanding of the material. Arguably a difficult exam will more easily distinguish the better candidate, and therefore be fairer. However, fluctuating pass rates suggest the required standard to pass is not consistent, and this is where the examiners lose credibility in my opinion.
Of course, if an exam really takes a good well prepared candidate 4-5 hours to do, it may end up testing exam technique as much as anything else, which may not be a very fair test. (But to be honest, I find it difficult to believe the 4-5 hours figure)
Last edited by a moderator: May 12, 2011