Colleges and schools in general are also very unforgiving of sick time, compared to work.
If you miss a week or two of a difficult class, you may not be able to make up for that lost time in order to pass. With some classes only being offered at specific quarters/semesters and many being impacted, a single failed or dropped class can put you a year behind graduation, assuming you can pay for it. If a professor or teaching assistants gets sick, it would have pretty significant impacts for a larger number of students.
If you miss a week or two of a difficult class, you may not be able to make up for that lost time in order to pass. With some classes only being offered at specific quarters/semesters and many being impacted, a single failed or dropped class can put you a year behind graduation, assuming you can pay for it. If a professor or teaching assistants gets sick, it would have pretty significant impacts for a larger number of students.