This isn't exactly rocket science ... my daughter just started college, and as a tech industry employee let me tell you, she got no financial aid (some other academic things aside).

When we started filling out the student loan paperwork, I had literally this idea (the whole legal separation thing) as a passing thought. Of course, because I'm not a monster, I laughed it off and kept on filling out the paperwork ... but one doesn't have to be a great student out of Wharton to figure out a scam like this, and you can bet your arse more people have actually pulled the trigger on it.