If you are going to miss more than two weeks of lessons during the semester, you must notify the Chairperson of the department, the Director of Music and the Director of Applied Music before semester begins. It is not sufficient to make private arrangements with a colleague to cover the classes, and bringing a substitute instructor from outside requires an approval from the Director of Music. In the case where longer notice is not possible (as in the case of illness that comes on overnight), you may report your unavailability to teach by leaving a detailed message with the department staff at 773-508-7510. You should also use Sakai to notify your students.