>>11615433For midterms, they try to get their tests to fit in a normal class period, and use the the fact that students aren't supposed to have conflicting class schedules to prevent conflicts. If they need more time, they usually use a testing center, and add a little bit of tolerance for when students are allowed to start the exam (if, on average, a student takes an hour to finish the exam, then the testing center might allow for a half hour tolerance to the exam start time), and that prevents a lot of scheduling issues. If its finals week, they usually schedule the exams after classes finish, and they create subgroups of courses that students would never take in the same semester (low level math and high level math might get the same timeslot, undergrad and graduate history might get a different timeslot, etc).
