I take fundamental issue with the idea that a single metric should be sufficient to disqualify a student.
Typically, other than exceptional cases, usually there is a bare minimum requirement to meet(on some criteria or other) to avoid disqualification. System needs its rules to run efficiently.
Typically, other than exceptional cases, usually there is a bare minimum requirement to meet(on some criteria or other) to avoid disqualification. System needs its rules to run efficiently.