1- I also struggled in school despite getting A's on nearly every test I took. Somehow, A's on tests but minimal to no homework equals D minuses.
I actually had to take summer school to graduate HS. No college ever. The thought still makes me shudder. I went on to lead an IT implementation team for an organization that had over 10,000 computers and now I also own my own business. Go figure.
2- You can only have "supper" if you've already eaten "dinner". You can not sup before you dine. If dinner is the last meal of the day, then so be it, if you have another meal, it is supper. This was an extensive discussion in our extended household for decades. My grandmother and I finally put it to rest. It's a non-standard answer, but it is what it is.
3- My mom was a professional proofreader. That's a hard act to follow. Just as bad as had she been an English teacher. Possibly worse. I did win the 10th grade shortest sentence contest- "Go." - two letters with an implied subject of "you". I also got to play Iron Maiden in that class and got a A on that "poetry appreciation" project.