I distinctly remember learning about articles in fourth grade English in my US public school, and distinctly remember most of my class having a lot of trouble w

I distinctly remember learning about articles in fourth grade English in my US public school, and distinctly remember most of my class having a lot of trouble with them. To your point though, I taught myself to read at age three and was reading adult fiction by fourth grade, I've always been told I have a large vocabulary, and still had a lot of trouble in that class around parts of speech and grammar, because I apparently skipped out on essential English language skills by teaching myself to read and not learning by immersion. My theory of language was fundamentally different and I had to relearn English from the bottom up. This also caused me to perform terribly in foreign language classes as I was learning concepts I should have already learned about English... I wasn't just learning a foreign language, I was learning my own language at the same time.