Get Your Students Hired
I'm in favor of providing the extra exam time, even if there's no clinical learning disability but simply a desire to be thorough. However, if 95% of the class is done and you're allotting extra time for the other 5%, how do you occupy the early finishers without disturbing those who are still taking their exams?
Personally, I schedule tests as the last activity so that I have the option of dismissing the early finishers without affecting the remaining students.