Educational test (4)
I believe the answer is:
exam
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">educational test</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 exam that I've seen before include "Important test" , "One test" , "One might be taken for English" , "Test (abbr)" , "One taken by candidate" .)