Based on this question: Is it unethical to accept extra time on exams when I still do well?
To my knowledge, I don't think my university or home department has a policy on extended time exams or a "disability office". In my entire stay in the university, I have heard of only three people with mental illnesses. Two graduated. One is still in the university, but I have not yet asked her. It seems like she is entitled to have extra time on exams or homework or something that evens the playing field.
Are there any legitimate reasons a university may have for not allowing extra time or something for mentally ill students, assuming of course that the student can prove mental illness? It seems that they ought to give extra time or something to be fair to students.
Relevant links: this comment, this answer, this answer.