Also, generally for other school sanctioned academic activities associated with other classes (including art and music performances). Such policies create time conflicts that may not necessarily be obvious at course selection time. I.e. if the student takes two IB courses, but the IB test for one course causes a missed class for the other and results in a penalty, or if the student takes orchestra or band and some other course with such a penalty, but then the orchestra or band goes to perform somewhere, do the orchestra and band members have to choose taking a penalty between the performance and the other class?