Flagging words and message tracking could prevent school threats and  school shootings before they even occur! As an example, when students see that someone threatens the school, students decide to skip for a day, just to not risk the possible danger ahead. Although, if the students see that the police is tracking the threat: students would feel way more secure. Tracking the messages of the person who announced the threat, would help the police find out more information regarding the threat and deciding a way to assist the situation. It can also track the messages of the person who told the threat, and see if they have any actual plans or if any other people are involved as well. 

Message tracking could make people feel uncomfortable while texting their friends. Since people know that they are being watched this could cause big problems privacy wise.  This makes people feel like they aren't able to express the feelings to one another. This loses our privacy, but helps us gain safety. Another Disadvantage is  that they might flag a message that has no harm to it. If they flag any dangerous words like, "School Shooting", or "Killing", this could flag a lot of different, irrelevant information. Someone could simply be talking about how these situations are vile and horrible, and they could get flagged as a result. Plus, tracking things minors say can be a risky deal. "The Children's Online Privacy Protection Act (COPPA) Specifically aims to protect the privacy of children under the age of 13 by requesting the parental consent for the collection or use of any personal information of the users." (Epic.org). If the parents don't consent to their children's information being tracked/collected, this could cause issues legally.