Ok so first of all I know this is petty.
I have recently started learning a new skill; I liked the teacher at first but now I think I will change as a lot of lesson time is spent chatting and I don't feel like it's a very efficient use of our time and my money really. Being very English I obviously haven't told her this and am very polite and nice to her in person 
Anyway I have just finished university but for personal reasons couldn't take all my exams this year. For that reason I have been applying for part time jobs which will allow me to juggle studying and working
She questioned me on why I wanted to work PT to which I replied that I had a couple of exams still left which I wanted to focus on. I deliberately didn't talk about why I hadn't taken them. (I'm an older student btw in mid twenties and went to a pretty good uni in a huge city; it's not common for people in my local area to study there.) She said with kind of a sneery voice, oh I know what you mean - resits!!
I then moved the conversation on saying they weren't resits but she took the piss a couple of times after, making little jokes about me going home to study, nudge nudge
Reading this back I think I'm being pretty over sensitive aren't i! But anyone else hate it when people do this?? It really wasn't gee place to comment, re sits or not