Bardiac: discusses The Wall here. I think it is ia pretty apt description of what happens at the end of the semester.
We all get tired and those of us with just a little power and/or common sense make some 'adjustments' to the course. Mine was to move to a take-home final exam in my ethics course. It was going to be a multiple choice exam on presentation topics. Now it is an essay exam that has short answers and one essay question.
I did this so I could take off for Red State with hubby on the Wednesday of finals week and not have to hang around on that day to give a final at 4:00 -- also, because I just couldn't face writing the darned exam. I pretty much have the time, but not the willpwoer.
I'm also planning to shorten the logic final exam -- but, this is more because it took my students last semester a long time to finish and this semester they are slower than the last bunch....so, I don't think it is a 'wall' issue...
Now, if it could all be over.... please!