Schoolchildren (6)
I believe the answer is:
pupils
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">schoolchildren</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pupils that I've seen before include "Eye openings" , "Scholastics in the eye" , "Apertures in the eyes" , "Schoolchildren" , "Schoolkids" .)