In 5th grade, we use an economy-based classroom management system. This not only teaches the students about responsibility and finances in the real-world, it helps us meet our Financial Literacy Standards.
Students apply for jobs, get paid bi-weekly, and write checks to pay rent. Credits are used to reward behavior, compliments, and helping others. Debits are issued for consequences (not meeting the classroom expectations). Our classroom is student-centered, so all of this is discussed, and agreed upon as a whole class, once the students start school.