Excellent idea, I love it !
I was considering doing something like that when I first got into EE but I'm going into my 3rd Year and never did it

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I used a whiteboard in one of the study rooms at my school and I was amazed by what happened.
I can't describe it but when everything is on the white board it's easy to see and understand. It's a similar sort of illusion you get when you go to class and see the prof or your teacher solve a problem which you believe you understand until you get home, of course !
Only, when you use the whiteboard yourself you really see " it" everything seems to make sense. I think it has to do with clarity of presentation. It's also great for problem solving because you have more space to jot down your ideas and mistakes are much easier to spot.
I think it will be a great investment! I am still considering buying one.