Exam exceptions for student with disabilities I am registered as a psychologically disabled student with my University, and (for disability reasons) have asked my professor to allow me to take the exam at a date later than the ordinarily scheduled time.  I have not received a response from my professor yet; my guess is that she is hesitant to agree to this exception for several reasons. One, is the notion that I might have some kind of advantage over the rest of the class. Second, should my professor make modifications to the exam (e.g. change problems, make it harder) for my exam, then she may argue that the other students' exams will have to be graded differently from mine, and that's unfair. Third, the exam is scheduled at the normal class time, 10:00 AM - 10:50 AM, so it can be argued that if a student attends class regularly at those times, then there is no reason why the student should need to take the exam at a different time. 

My professor hasn't said any of the above (yet) and I don't read minds; this is just my best guess of what she will think of my request. University policy leaves the decision on such an exception entirely up to the professor. (No department in the University has authority to influence her decision. Not even the office of disability services can influence her decision in this case.)

From your experiences at universities, how do most professors typically respond to such exceptions? For you professors, does the exception I'm requesting appear reasonable to you? Are there any other reasons you can think of for why the professor would/should not grant me an exception for the exam?
Exceptions can always be made under certain circumstances. Interestingly in your long and detailed question, there is no trace of a reason for requesting a delay other than your general condition, which I cannot see as a reason by itself. The university/department probably has some rules or policies for such cases. There are usually ways for people with different disabilities to take an exam in parallel with the scheduled exam in a a separate room, sometimes with specific tools and help. I can for example see that hospitalization and family funeral can be clear cases for such exceptions. 

So if an exception is made, what would you have to expect? To provide exactly the same exam twice seems extremely unlikely for the reasons you provide. So from the teacher perspective, making a new exam is not something to take lightly, it requires a lot of work (if done seriously). In other words, you would get a different exam designed to be of equal difficulty. From a student perspective a new exam can always appear either easier or more difficult based on what and how well you have studied but in general, the exam would not intentionally be made more difficult.