Of all the accommodations we are told to make for certain students because of some specific or general learning disability, "extra time to complete assignments" is the dumbest one of all. I can understand "extra time to take a test" or "test in a solitary environment" or "break long-term assignments up into smaller bits" or even (sometimes) "preferential seating" or "periodically accept late work", but "extra time to complete assignments" doesn't even make logical sense. And here's why.
When I give an assignment, it's due the next day. So, if I have to allow "extra time to complete assignments", a student might have, say, two days to do an assignment. This causes severe problems for the student if they really take this extra time, because during the 2nd month of school they would still be working on assignments from the 1st month of school--and probably not doing well on tests and quizzes in the 2nd month, either, because they haven't done any of the assignments for the 2nd month's material. Fast forward to the end of the semester, and the student has only done the work for half the semester--yet the final exam date is firm, and the date the grades are due to the registrar is firm.
Someone didn't think this through. It doesn't help the student at all.
No, I wasn't asked to do this for a student--not any time recently, anyway. We were discussing accommodations and modifications in our department meeting yesterday, and the talk stirred a memory of this worthless accommodation from the dark recesses of my memory.