"sandpaper days" comes from some song I don't know. If not, it should. 1200 grit is extremely fine, I think, like polishing rouge, which is what the top of some heads look like. How it makes Friday fall short I can't see. Would be nice to carry the metaphor further. comma after hammer. Last 2 verses good.

There is a good line in here, the one about chrismas I mean, but on the whole it drifts off in the ‘I make some kind of statement’ direction. You know, this and that: is nobody’s fault, no one knows, all I have, all I can, undsoweiter. It’s like generalising the personal in order to express an all too poetic mood of inconclusiveness. Perhaps. I could be completely wrong here. But one does have that liberty in the warm wet womb of the internet.

Anyway, speaking of teachers – I just watched Taylor Mali perform ‘what teachers make’. I think your logbook poem is better, but this one is worse. So much for comparisons.