Grammar and diagramming back in the 7th grade. We covered all the parts of speech and their variants. Never covered it in so much depth again. It stuck.
My Mom, a College English (and Accounting) grad liked to help me with that. And sometimes it was neccessary.
Joyce, my main rival, had her Mom helping her too.
Both of us trying for 20 of 20 on the homework sentences (find the error and correct it, for example).
Can I still diagram? Subject Verb Object ... not so good, but I can figure out the sentence. Well, not the current ‘news’ stuff, as we see in the horrid ‘Headline Titles’.
And reading The Bible, with triple deep quotes is a lot of fun, too.
Being the brash 23 yr old I was I replied back it was and proceeded to diagram the sentence for him. I said, that’s a sentence anywhere in the United States. If you doubt me we can go to the English department to have them confirm it.
He never questioned my grammar again.
A couple months later I was visiting my old high school and tracked down my 9th grade English teacher and told her the story. Thanked her for teaching us diagramming. Made her day.