When you were in college, if the chair of your department sent you e-mail telling you to schedule an appointment with him, would you at least answer the mail. Not the student I'm meeting with tomorrow.
He failed a class this summer because he missed five of the twenty lectures. When I did a bit of research I found that he'd failed quite a few classes for this reason and had poor grades overall. I thought I needed to have the "come to Jesus" talk with him so I sent him e-mail. No reply.
In the first two three weeks of Fall quarter, he's already missed four lectures in two classes. So, I sent another e-mail telling him to meet with me. No reply.
Dude! I had to serve him papers! I printed out my e-mail to him on letterhead and gave it to his Fall instructors to hand to him in class!
He made an appointment and we meet tomorrow…if he shows up.