Any student notified of a claimed violation of WAC 132I-400-010 shall have the right to a brief adjudicative hearing if a written request for such a hearing is received by the dean of students within twenty-one days of receipt of a declaration of further athletic ineligibility. If no written request is received within twenty-one days after receipt of the declaration of athletic ineligibility, the student will be deemed to have waived any right to a brief adjudicative hearing and will be declared ineligible from further participation in school-sponsored athletic events for the remainder of the school year.