Ross Bentley has written an ebook, The HPDE Instructor Manifesto, that he's made available as a FREE download.
I recommend it. Here's a link to his site, where you can download it.
http://hpde-instructor-tips.com
Just downloaded it, so this isn't a book report. Ross' other books are great. If you're not an instructor, I'm betting you can learn a lot from what we look for and what we see. Me, I'll read anything that makes me better at what I do.
Enjoy.