I am going to go MAD if this happens at my child's school - when he goes to school. My brother was diagnosed with dyslexia when he was young, which I accept and I do not say everyone can learn to spell in English, but this and bad grammar really get me worked up.
There are REAL consequences for appearing illiterate. John Humphreys, in "Lost for Words", was most articulate when he pointed out that the theory which swept through education in, I think, the 70s, which did not "privilege" "correct" grammar, actually left many people unable to stand up for themselves with representatives of the law or of medicine, for example. This disarms people, makes them seem uneducated and vulnerable, rather than distributing equality throughout the accents, dialects and classes.
Parents who speak the "correct" "language" of power will of course make sure their children learn that language so that their "word" will be accepted anywhere. But what about those who are taught by people who cannot spell, such as the teacher mentioned by the OP? It's horrible. Does she mangle grammar as well, Rosefairy? [trying to fit her prejudices into the context]
Sorry if I have hijacked the spelling thread a bit, but this literacy business really irks me. I must admit that I am also worried that my language skills will one day no longer be valued, because no-one will recognise them... And one of the things I have to give to my child(ren) will be worthless (and who knows if I'll have anything else to leave him[them])?
Now, I hope to God this post is free of spelling errors, or I will be soooo ashamed ... and rightly so! Thank you for giving space to my rant. Keep our end up, Rosefairy and everyone else!