If I'd asked my parents to co-sign anything with no physical asset tied to it they'd have laughed in my face. About the only thing Dad might have co-signed was a loan to buy a couple head of feeder cattle as a way to get started. Even then, he would have demanded either a percent of the profits or a guaranteed flat return as a way to teach me about the cost of borrowed money. He's generous to a fault when people are in need but he doesn't suffer fools when it comes to finances. Mom would have straight up told me No to anything like that.
Hey, if someone is sure enough of Li'l Darlin's career future to co-sign loans for their education, more power to them. Just know what you're getting into. Idiots who signed off on their progeny's student loans for generic degrees at SJWU or WokeTech? They should have their heads examined.
Brad