What has this world coming to? Why is your brother using this language at school anyway. It is unlikely that the officer can and will arrest your bother unless there is something else going on. Without a proper consultation, there is no way to give an accurate answer. If your brother is considered a distraction in the classroom he can be suspended or otherwise punished. Students do not have absolute first amendment rights in the school building.
If your brother is a juvenile, he can be placed in secured custody (arrested) and served with a petition for disorderly conduct. If he is an adult, he can be arrested for disorderly conduct, contributing to the delinquency of a minor, etc. Sounds like the better course of action would be to stop cussing at school and respect authority. Your brother will be held responsible for his own actions, not judged by the actions of others.
The information provided by Attorney Matthew V. Silva is based upon the generic and ambiguous facts presented in short questions. Without a full consultation with an attorney, you should not rely upon any information presented in this forum. The intricate facts of every case are different. The information provided is not legal advice and should not be the basis of any decision without the actual guidance of an attorney. Further, any information provided by Attorney Matthew V. Silva should not be perceived as a willingness to represent you or actual representation. If you would like to speak with Attorney Matthew V. Silva, please call Silva and Sweet, PLLC at 910-333-9833 or visit www.silvaandsweet.com.