I set aside Wednesday and Friday mornings for students to make-up work. In order to attend a make-up class, the student must schedule the make-up by signing up with me. If their name is not on the list, they cannot attend the session. This allows me to know exactly who is coming so that I can decide what materials need to be covered and it forces the student to make a commitment. If nobody signs up, the session is cancelled. Students, who come without previously signing up, quickly learn the importance of communicating their intentions to me. Failure to show up for two scheduled make-up classes results in the student losing the privilege to schedule future sessions.