text: Policy number 1 is better for a lot of reason but policy, but policy number 2 is not a good idea for you not to bring your cell phone to school.Teachers can have a hard time telling if their students are ingaged and focused. Students can be disingaged and a teacher wouldn't know. With technology, such as teh Facial Action Coding Systm, teachers can see how their students are feeling about the classroom. They can see how they feel about the material they are learning and the work they are given.