When is a student required to notify faculty of a need for accommodations?

DSS encourages, but cannot require, registered students to provide instructors with their Accommodation Letter at the beginning of each semester. A student can register with DSS or present their Accommodation Letter to faculty at any time during the semester.  It is important to understand that accommodations are not retroactive, so students cannot retake exams prior to when accommodations were not in place.  Accommodations begin at the point the student has provided faculty with their accommodation letter.