I managed to come near the top of my class this way with something like 5% attendance at lectures.
I expect this isn't the case in the top Universities, but I left my University thinking I could have just paid to take the exams and self-taught the rest of the material. In hindsight, I was really taking out huge loans for a few years of drinking, socialising and playing video games.
In the working world, I've found meetings to be similarly pointless. 95% of the time I'd rather hash out a problem on an email thread where thoughts are expressed clearly, re-read and understood by others in their own time.