School mark or rating (5)
I believe the answer is:
grade
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">school mark</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">rating</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that rating can be written as grade)</span><br/ ><br/ ></span>
(Other definitions for grade that I've seen before include "Rank or status" , "School mark" , "one of the entertainment moguls" , "Particular level of rank, quality, etc" , "Degree" .)