Does it get easier? Can't answer that one. For me school was only ever a challenge when I procrastinated so, needless to say, I developed the habit of procratinating during grade school and kept it up all through university. Even when I wanted to change, I didn't. Maybe I didn't really want to change though, the stress of writing a term paper and doing all the research two days before it was due was, fun in a fml kind of way. Basically, school made me develop some lazy habits growing up.

I was also good at writing tests and never studied for exams.

Profs though, I used to use a site called ratemyprofessor I don't know if it is still around.

Group assignments are awful... You can always talk to your instructor if someone isn't doing his or her fair share. In the few classes where we had group projects, there were always individual portions split up so you can be graded fairly. But, don't worry about grades. You're learnin' and stuff.