They want to extend the 'length' of the school year. [=to make the school year longer; to lengthen the school year]
I've been/traveled 'the length and breadth of' the canyon, but I still haven't found the caves I'm looking for.
I managed to swim four 'lengths' of the pool. [=to swim from one end of the pool to the other end four times]
(..) - Mad for thy love? - My lord, I do not know - What said he? - He took me by the wrist and held me hard Then goes he to the length of all his arm, and with his other hand thus o'er his brow... ...he falls to such perusal of my face as he would draw it. Long stayed he so (..)2015 Hamlet