Am I a loner (school)?

I'm in the same boat as you dude. But ur not a loner. There could be few things such as u might be an empath (I am)which is why u like helping people. Also you may or may not be an introvert. This might be right but u probably think about what others think of you but you won't really care if its good or bad? You should look up empathy tho and look at its characteristics. You could be just a really nice and considerate person.