Of course I ask this question after it’s completely irrelevant to me. (That’s a lie, there’s always grad school!)
For the vast majority of college, I didn’t take many notes. It had nothing to do with laziness, seriously. At first I would try to take as many notes as possible, and over time I wrote less and less until eventually I just stopped getting out my note taking implements altogether (for most classes).
The reason? I did a lot better when I didn’t take notes. I felt that I absorbed the material better. I made an effort to be engaged and pay attention, answer and ask questions in class (within reason, obviously), and focus on the material being presented rather than on writing it down.
Now, it wasn’t a huge increase in grade quality, we’re not even talking between letter grades, we’re talking maybe a few percentage points at best. But I found that after I stopped taking notes I retained material for longer after classes were over, and had to study less for tests. And on top of that, I felt much less stress during tests and felt I could apply the concepts better. There was a bit of a tradeoff, admittedly, in the time it took to do homework, since I didn’t have examples done in class written down and often had to rely on the (often incomplete) instructor’s notes and slides online, but that’s okay. I also had more trouble with certain rote things.
Though I should mention that I took notes during review sessions, it was just during the normal lectures I didn’t take notes, when I was still absorbing the material. I used the time when we were going over it again to write things down.
I have to say though, I’ve had way more students than teachers baffled at this. To students it seems to me that the response is “You… you can’t do that!” And have bought into the idea that taking notes is Important™, and if you don’t take notes you’re lazy, a slacker, and/or bound to fail the class. I’ve asked some teachers/professors earnestly about not taking notes and they generally say “Meh, if it works for you, it works. Power to ya.” And otherwise generally say that what makes a good student tends to be involvement and thinking about the material, independent of note taking habits.
This isn’t to evangelize not taking notes. It exists for a reason, and I’m sure a lot of students do well with it. I’m more curious about how students/teachers/random dopers feel about not taking notes, and whether any other people have the same learning quirk.