Why not send that at the start of the school year instead of the end? Maybe along with a challenge to learn your class material in half the semester. Or assign it as an optional reading assignment worth a small bonus % if they submit a brief plan on how they would apply the advice in that article in your own class.

Is the tone of your email what you really intend? To me it reads like "I'm probably wasting my valuable time casting pearls before you swine. But just in case even ONE of you is worthy, here is some good advice from Derek Sivers". I find it dismissive, bordering on contempt.