Final answer:
Schools require permission to bring cell phones to prevent distractions and disruptions in the classroom, as well as to prevent inappropriate usage.
Step-by-step explanation:
In many schools, students are required to have permission to bring cell phones onto school grounds. This policy is in place for several reasons. Firstly, cell phones can be distracting to students during class, as they may be tempted to use them for non-educational purposes, such as texting or browsing social media. Secondly, cell phones can be a source of disruption, as they can ring or make noise during important lessons. Lastly, cell phones can also be used inappropriately, such as for cheating or cyberbullying.
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