...There's no question.Question: Last fall semester I failed my math class. My prof was an ENTJ. Put all sorts of hopes in me and everyone in class. I did my best. I failed. He even gave me like up to a fourth chance and it didn't work.
I haven't seen him since.
There's something I have of his I forgot he lent me and now I have no choice but to go see him again when this semester starts to give it back and I'm scared of facing him. I know he's prolly like super disappointed in me.
Generally speaking, though, his memory will probably be a little higher for you if you return his belongings to him. It would make me happy if something I lost was returned to me. It helps build character points between you and the teacher. And if you gave an honest to whatever-you-believe-in attempt, then he'll at the very least respect that. If he is disappointed, it's because he honestly wanted to see you succeed, so I'm sure he's not angry at you. It would be like if your kid failed a competition or something. You're more sad. And chances are, if you're not taking his class again next semester, you wont be seeing him much anyway.