I recently saw this question asked at a large public known for having a lot of out of state students, some parents unknowingly give bad advise (official days off are only Wednesday through Friday), some replied that their student never had to attend classes that week. Unfortunately more parents than not reported their students not only having mandatory classes, but exams as well, and not yo book non refundable flights (fortunately my daughter had close relationships with her professors and would ask the first week after receiving the syllabus, and would usually get accurate answers, even if she didn’t like them).