If a student is going to be out for multiple days, a note would be helpful, particularly with deadlines. Most likely, the parent has been in touch with the school nurse and/or guidance counselor, who can have work collected the main office. Generally, work requests take a couple of days to fulfill. If a student is missing time due to a vacation or for a non-medical reason, responsibility will fall to the student in advance of and upon return from said absence to collect his/her work.