Why do professors scale marks and raise the marks of students that don't deserve it?

<p>

</p>

<p>Would you prefer getting a B while everyone else fails, like in my last examples? It seems not…</p>

<p>

</p>

<p>If you state they’re incompetent at doing their jobs, what makes you sure that they’ll be competent in grading (since it is, after all, part of their job)?</p>