Students are disappearing or not showing up

[jvxday]

I have 69 students, they are all well past the amount of points needed to pass their exams. Right now, it is exam day and zero students showed up so I didn't get any tuition pay for the day. I was wondering if this is normal, that they just don't show up for classes on exam day if they already have max points. I am suspecting this is a bug or something though. I have had students getting max points and still coming but today there are none at all. I have also noticed something start to happen where only one classroom of students at a time shows up. The longer and longer I have played, students just don't render or show up or whatever is happening, I have no clue what is wrong. I've lost sm money too because of this, everything is completely fine but now I stopped getting all the tuition pay I need because students don't come to school. I know it's not a discipline problem by the way, I have already looked at all that. Another thing I noticed is for some reason all my students don't bring contraband anymore. No one at all. They all have at least 50% discipline. Is this my own fault and I'm just missing a problem in my own game?
EDIT: I just realized this may be because of dispatching them smh. I am going to make sure

[Diruk]

I wasn't sure if I was going to suggest looking at your dispatch, hope that was the problem.

I feel like in the beginning contraband is common just to get your exposure into it. But it dies down as you properly manage your classes and only recruit from the desired student pools. In some of my late games I would only get contraband from students in neighborhoods were behavior difficulties are expected from, like theatre boulevard.

[jvxday]

Originally posted by Diruk:

I wasn't sure if I was going to suggest looking at your dispatch, hope that was the problem.

I feel like in the beginning contraband is common just to get your exposure into it. But it dies down as you properly manage your classes and only recruit from the desired student pools. In some of my late games I would only get contraband from students in neighborhoods were behavior difficulties are expected from, like theatre boulevard.

Yup, it was the problem lol. The reason it felt like they were progressively disappearing more and more is because I eventually unlocked all three dispatch slots and kept sending all the classes out, so now I will be doing it less often so that I actually get money from school shops and the cafeteria.
Also, that makes sense about the contraband thing. I am like 24 hours in at this point and stopped getting badly behaved students. Thanks for your help!

[Diruk]

I highly recommend that you send out at least one dispatch to the repeating field trip that gives you money reward for completing it. The money earned from that one is generally always higher than what you could make from fleecing your students. I generally send my smallest class there for the least impact. Class size does to matter for the field trip, you'll still make the same reward money.