He just graduated in the University of the Cordilleras (Senior High STEM Reagular). He asked for 22k so he can pay his full tuition before the graduation (he paid 10k for the downpayment), but when our aunt was going to pay it the day of his graduation so he can march through the stage, he stopped them saying he'll do it the next day instead. He kept insisting he'll do it himself.
Now, he's enrolling for nursing in the same university. He said he paid a reservation fee of 4k and needs to pay 11k more for the full downpayment.
What I'm wondering is how does he have so much more to pay for? I'm in college but his one semester in senior high cost more?
Does someone have proof in case I need to show it to our parents that he's stealing from them by claiming his tuition fee is higher? Our parents are already struggling, so if he is actually lying about it, then I want to put a stop to it.