Participation & Attendance Marks

All you college/university-dwelling ENFPs...How do you feel about participation and attendance marks?

I skip a some of my classes, especially the 3-hour ones, because I have troubles sitting still and focusing for three hours straight. I still feel like I participate more in total than people who attend the class every single week.

Would love your thoughts...it just irks me that in some classes: a) you are "forced" to attend lecture in order to get attendance grades b) people get "participation" marks just for showing up

Thoughts?