Gosh! I used to do that too. Some teachers couldn't spell but they didn't always like it when I told them the right way to spell a word. I could also see exceptions to points they made. I eventually learned to keep my big mouth shut but went too far the other direction and clammed up most of the time.
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Break out you Western girls,
Someday soon you're gonna rule the world.
Break out you Western girls,
Hold your heads up high.
"Western Girls" - Dragon