I find the behavior predatory but not to a point that I can complain about without any more detail. If I swap out senior students with complete strangers, then

I find the behavior predatory but not to a point that I can complain about without any more detail. If I swap out senior students with complete strangers, then it kind of sounds worse, but that may be an unfair comparison. One thing that I will complain about is the preferential treatment that these seniors are showing. In my opinion, you are in a course to learn and teach (or because you're forced to), and these seniors definitely fall in the latter, yet, as teachers, they only help select juniors. This somewhat reveals their intentions and also makes the other juniors uncomfortable. I don't see what point the app and diversity data play aside from optimizing for the courses you join and being backstory as to why seniors are joining. You're free to stick your head into courses and figure out if there are potential partners there.