My mother was the original grammar nazi. She made me learn the parts of speech when I was four. I always got As in English and writing because of her. Thanks, mom.
I grew up in the late 40’s and early 50’s. My teachers in public school and in parochial school were all very good back then.
I remember the diagramming of sentences in grade school. I had the most difficulty with commas, and the difference between dependent clauses and independent clauses.