I started teaching at a charter school recently. Since the school digs my style, I try to push the curriculum by inserting entrepreneurial ideas every now and then.
One of the things I'm doing is to get them into some real-world writings (everything other than English literature.) If I can get them excited about reading blogs and articles online, that will be a good start. So far I thought, this will be a good first essay to read.
http://www.paulgraham.com/hs.html
Please throw me more suggestions.
Hard to go wrong with some Seth Godin. Here's a link to Seth's best from the past two years.
http://sethgodin.typepad.com/seths_blog/2008/09/best-of-the-...
I also like this series from Mark Cuban called "Success and Motivation"
http://blogmaverick.com/2007/12/24/success-and-motivation/