Referring back to spelling, I spell-checked one of my daughter's GCSE modules and, though the spelling was ok, the grammar was appalling - words in the wrong order and hardly any apostrophes, commas or semi-colons. Apparently, this isn't a priority for the teachers so they fail to correct the children, thereby leading to the deterioration of written English over recent times.
My work colleagues laugh at my emails and text messages as I tend to write everything in full, and with grammar and spelling checked.
I can't help it - it's the way I was brung up!!