Boys’ school in Berkshire (4)
I believe the answer is:
eton
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">boys' school in berkshire</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eton that I've seen before include "old school" , "Posh college" , "Town on the Thames noted for its school" , "Berkshire public school" , "learn here?" .)