Objective: Don't make the teacher mad!
Note from principal: Please be sure you are supervising students and keeping them in your classroom. Please continue to only allow them to leave one at a time to go to the restroom. Please do not allow them to "run errands," go somewhere to get a yearbook signed, or to their counselor (The counselors are working with seniors at graduation practice and are not in their offices).
That means: Ask me to use the restroom. One at a time. And you have two minutes to get it done.