I use this in my classroom each quarter. Students are allowed to listen to their own music if they get an "A" on a test or a quiz - this is a privilege that they can earn for a limited amount of time between quizzes. They can only listen to music when they are quietly working. They have to have this pass out so that I know they've earned that privilege. My students love to use their tech in class, so adding that privilege as a reward is something that helps motivate them to study!
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