sof davar-
We always read the report card comments. The time the rabeim and teachers take to add a remark is appreciated and shows they take an interest in the child beyond just getting the grading over and done with.
When I was in elementary school, I once brought home a report card with the following comment on it, from my rebbe:
“From outer space!”
That was it. Verbatim. Not paraphrased. I still remember it well, several decades later.
I don’t think it was meant as a compliment.
(I don’t hold it against the rebbe. He was reasonably nice, and I was a difficult student – his frustration probably got the better of him. Years later, when he was no longer a rebbe, I had business dealings with him and never mentioned this incident.)