Mr Jennar's eyesight
Mr Jennar had to wear glasses with lenses like icecubes. To help him out I would do my homework in impossibly small writing using a 0.015 Rotring art pen and a magnifying glass; I found that by doing this I generally got improved marks. I can only assume that he didn't want to let on that he was technically blind, and simply gave my shoddy offerings the benefit of the doubt.
written by An*y *ansh, approved by Log

We had a supply teacher in year 6 called Mr Maughan who was blind in one eye. Consequently, his eyes appeared to look in different directions.
When he shouted, "You boy!! Stand up!", a lack of further clarification would result in anywhere between 2 and 20 boys standing up, mostly looking confused and bewildered at having been pulled away from a really good long division sum.
written by excluded pupil, approved by Ponky