On our midterm exam for our methods grad class, one of our questions asked us to design a contingency contract. You may have heard of these in college or in the business world. Basically, they are behavior contracts.
You list the requirements. Student agrees to the requirements they will do. You spell out the reward/privilege/grade/outcome. Discuss. Agree. Sign.
I'm pretty sure I experienced some of these during college. The instructor would list the assignments for the semester, how many points each one was worth, and then how many points needed to get an A, B, C, etc. Ironically, I don't remember any discussion...
At the time that I was designing mine, I couldn't figure out how to make it work for assignments. I guess it's easier in college when you meet less than daily and require bigger assignments. But there's no way I want to list all of the homework assignments, quizzes, and tests for an entire semester. So instead, I wrote mine based on how to earn daily participation points. I currently don't do this. Actually, I've never given participation points. But since classroom management is my downfall, this might be a good way to clearly spell out my expectations and not feel bad for enforcing the consequences.
I wasn't too familiar with the idea before this assignment so I thought I'd share my contigency contract with you. Maybe you don't need it but you could always use it as a template.