Jill, your heading made me LOL! ; )
I was really surprised when I read that only 5% of students with attention deficits complete a degree (the 41% success rate isn't impressing me, either, though)! Do you think it is safe to say that a majority of students in our classrooms have an attention deficit problem to some degree? I'm thinking of the students I'm working with right now, and most of them really have trouble concentrating.
I think I've used most of these strategies with students. Mnemonic devices seem to work well, as do any kind of visual manipulatives.
As a teacher, I think you have to use them consistently to help students develop the habit of using them. It is very important to teach organizational and note taking strategies. Many of our students don't have a clue about taking notes! I used to think that study skills are something students can pick up on their own, but I was wrong. I find that students need very explicit instruction and consistent practice before they can take good notes or organize their study time. This can be tough in my classroom, because I don't feel like I spend a lot of time actually lecturing.
As for the "why try if only 5% succeed" part of your question, I think we have to try because if makes such a big difference to that 5%. When I was a junior in high school, my goal was to graduate and then get a job on the assembly line of a small factory in my hometown. I never saw myself as capable of going to college until a concerned guidance counselor took the time to encourage me to continue my education past high school. I can't imagine where I'd be today without her support. We don't always know how we are influencing students, but I know we are changing lives. (Wow, I am sappy this afternoon, huh?)