You can find the exam schedule on the Registrar's website.
From the Faculty Handbook, section 2.6:
Faculty members are strongly encouraged to include a cumulative examination or other culminating experience during the final examination period…Final examinations for semester long courses must be given during the College-wide examination period at the end of the semester. (Exceptions must be approved by the Provost). Under no circumstances should they be given during the last week of classes…A faculty member may not reschedule a final examination for an entire class without a compelling reason and the permission of the department head and Registrar.