Keep track of the project. Distracted by school and socializing, teen techies usually disappear in the middle of a job. To get your work done in a reasonable time frame, it's up to you to remind your techie to come back. Try to get a firm commitment on dates, hours, etc. Just say no to piracy.
Teens typically download most of their software for free from the Web.
They'll press you to get your software this way as well. This is because they have no concept of corporate expense accounts or legality. Keep reminding them that software piracy is illegal and that your company will purchase any software you need. Plead with parents. Kids will be kids, and my techie is no exception.