It might well be a sign that I’m “doing a Tony Benn” (= actually becoming more left wing as I get older), but I increasingly avoid the competitive giving of points in YL classes, and absolutely refuse to get dragged again into the “sticker economy”.  Instead I give virtually everyone 100%. To see how that can actually work, here’s an article of mine on the topic in the latest edition of Humanising Language Teaching (hltmag.co.uk).  Number 3 on this page:

HLT Short Articles August 2014 – LINK FIXED