I am guessing that you are a teacher. Well, me being myself a student at school in year 7, then I would say that it is usually a good thing. If the student in question says it in a really happy way that is good, but if it is said in a sarcastic way, then that is pretty bad. If it is said sarcastically, that would mean that it is meant as a joke and you are not 'cool'. 'Cool' means, in this contex is a compliment. Also another word they might use is 'sick' meaning the same thing.
It means cool. "that was dope" "that was cool"
It could mean that he likes you to.
it means she likes you and she wants you.
It means "Are we still together?"
You did something cool, and they're congratulating you.
just means u seem cool btw if some1 says seems legit they mean it seems cool
It means they like you but they don’t love you and your at a disadvantage in there circle unless you prove otherwise
He likes you, thinks you are cool.
they mean the student is different from others. doesn't mean he or she is special ed. it just means that student may need more attention than others
Answer Could mean that he likes her.
it means he hates you.
It means their saying their cool and that they like you cos their saying opposites attract