When I was in high school, I got a D on a test. The way my grades had shaken out, that D would have led to me flunking that class, which would have cascaded into my GPA dropping below a threshold that changed my financial aid status, etc. It could have snowballed into a whole different academic path for me. I disputed one answer the teacher marked wrong, and they agreed with me, which bumped me back up to a C and saved my ass. On the walk home, I thought about it a little longer and realized I had gotten it wrong.

I don't know if the teacher just did me a solid, or if I smooth talked my way into a better grade.