theprestige
Penultimate Amazing
Well that was a long time ago. I believe that I got only the most basic grammar prior to 6th grade. Past, present, future. How to make a plural.
Subject, object verb. Adverb, adjective. The importance of ordering the parts of speech in conveying meaning. All of this was likely covered in grade school.
But the thing about native language is that most grammar rules get intuited through regular usage. ISTR it's been noted that young children will even intuit grammar rules that don't exist, from the grammar rules they do experience every day. Mis-conjugating non-standard verbs, for example.
But studying a foreign language from scratch requires studying all the grammar and syntax through conscious effort, from the ground up. So I would not expect you to get the same in-depth "remedial" instruction in English, that you would need for Latin.