This was a very interesting article on the subject. One I happen to agree with quite a bit.
https://medium.com/i-m-h-o/138c5efd45e9
I went to about a year of Graphic Design in '96 and quickly realized I was wasting my time. Hell, they didn't even have a computer in the department yet. They were teaching 60's techniques. Was horrible. I quit, spent that money on a computer instead and taught myself Photoshop, etc, etc...
Now I work as a video game artist and it's fantastic. Took some years just building my portfolio. Back them you couldn't just stream art instruction online. It took some outside instruction from art classes and what not, but still a tiny amount of money spent compared to what I would've spent going to an Art School.