In Spain they look at your last few months of bank movements and calculate how much to loan you (usually something like max a third of your income can go to mortgage payments)
There is some risk to the bank because the house may have declined in value and it may be tricky to sell it when you default. That's why they do a risk assessment, but it can be a lot less invasive than for providing a personal loan for an education.
Which is another thing we don't do over here in the EU.
Perhaps what's left doesn't necessitate a full-blown credit score system?
So instead a local credit union got a free $1500 for servicing that loan. A loan that I explicitly only took to "build credit" ie, pay a bank profit so they would vouch for me, which is what a credit score is designed to show, how much profit you give to banks and credit card companies for financing.
They don't want to loan out money that might be less profitable than a loan to someone who has paid a thousand credit card payments.
The credit union then proceeded to Not report my loan to the credit agencies! meaning I still have no credit. Awesome.