First, I'd say monitoring profanity, the word 'gay,' mentions of drugs and sex, etc. does not have bearing on the primary issue at hand: gun violence. If you can outline for me how giving a student body principal information on a student setting up a dating profile serves to solve the issue of mass shootings, I'd appreciate it.
Second, the systems discussed pull information from student's phones and directly monitor communication using school email addresses. The former is an issue for obvious reasons and the latter is an issue because you actually should have a reasonable expectation of private communication through mail.
The fact that it is possible for the school to read your mail is immaterial. It is possible for the government to read your mail. The government does not get to do so, despite the many, many crimes committed through the mail and by people that receive mail.
Actually, thinking about it, mass violence is probably secondary in these systems to predicting suicidal behavior. And while you can argue a principal shouldn't have to worry if a kid is bullied into suicide, or whether an underage girl is using a dating site to find external validation, you better believe they'll be the first ones blamed when a 15 year old girl goes missing after meeting a guy on a dating site she accessed during math class.
But I don't know of anywhere that provides you a computer, email address, whatever, without language saying they are for approved use only and can be monitored. From what I read the 'pulling information' was after a device was connected to a computer, most likely caused by school administrators and students not understanding how the system reacts when it sees a new drive attached. This isn't invading kids deepest darkest secrets, like asking them to accept a cacert or whatever.
Second, the systems discussed pull information from student's phones and directly monitor communication using school email addresses. The former is an issue for obvious reasons and the latter is an issue because you actually should have a reasonable expectation of private communication through mail.
The fact that it is possible for the school to read your mail is immaterial. It is possible for the government to read your mail. The government does not get to do so, despite the many, many crimes committed through the mail and by people that receive mail.