Contracts, Agreements & Pie, Oh My

Do you have unwritten rules or agreements with your family?  We have household norms that create a win-win for us. If I prepare the meal, for example, the boys set and clear the table, and John does the dishes. If John mows the lawn, the boys and I sweep up. If they go berry picking, I make the pie. Last night they came home with these fresh dewberries, so today we're enjoying this scrumptious delight:

We LOVE fresh dewberry pie topped with a dollop of whipping cream!

Does your faculty make a promise to one another and draw up a Staff Agreement?  If so, how does it work?  Using the Six Pillars of Character as a guide, we answered the question  
How do we want to work together?
to help decide what we could agree upon and use as our staff norms. We all signed the resulting document that hangs in the Teachers' Lounge.

Click image to enlarge

Do your students script a social contract or promise to one another?  If so, how is that working, especially at this time of year? Our students work together to answer the question: How do we want to treat one another? Here's a sample 21st-century Social Contract 
hanging in a third-grade classroom:

We've found that it's a whole lot easier to work together to craft an agreement and post a promise in August, at the beginning of the school year, than it is for us (and students!) to adhere to and honor it toward the end of the year, come April. What are your strategies to help keep that contract or promise fresh in the hearts and minds of your staff and students and make it more than just a poster on the wall?  How do you transform it into a working document that you reference, tweak, and practice all year long?