Implementing a 1:1 program, or introducing devices into the classroom is incredibly exciting; for students, teachers and everyone involved. It is crucial to get off on the right foot.
Use these resources to provide some basic, common-sense, guidelines and information for your students in terms of device use. The resources all come with a fun "permit" you can use to award students for being aware of these guidelines.
Best Practice: Provide the guidelines and write a short quiz the students must complete prior to receiving their permit. I didn't write a quiz for you because it should reflect your personal, administration, and board guidelines, not mine. If a guideline is broken, revoke the permit from the student until they discuss the situation with you. (Optional: require students to re-take the quiz and progressively increase the revocation time)