

You can read your student code, most of them do not have anything that compels you to use the services that are provided. If that is the case, refuse to use the service and make your position known, they’ll generally give you a workaround or if they say that’s how it is, you can ask for the part of the student code with the nonexistent objective reason why you must use it.
If you don’t want to be a squeaky wheel, there are technical ways of limiting the information loss, but the easiest is to not install anything and be conscious of what location, network, & device you use


I think protocol wise xmpp is the best, it however doesn’t have full clients on every operating system( something simplex appears to share) for that reason I have had to open my threat vectors up to allow software from corporate America, which in my opinion signal is the cherry on top of the shit sunday.