You don't. You shoot for a scholarship or get a job and save for it. Then work during the day and go to college at night.
So you want a country where the poorer your family is, the less likely you will be able to get an education, and therefore, the less likely you will be able to succeed and prosper.
For you, it's not just equality of outcome you find repugnant,
for you, equality of opportunity is equally so.
I'll side with Peach on this one. You take out a loan if you want to just go to college. Otherwise, you save your money while living at home--the money you may get as a gift, working, etc...--then buy the education you can afford or you work and put yourself through school.
Or you make better choices. We have dozens of community college campuses around here yet Arizona State is full of Freshmen paying much more than they would be if they were going to one of the junior colleges. This is a dumb decision if you're financially challenged. The JUCO is fully accredited, and the courses are transferrable.
One of the problems I have with the leftwing is that somehow youth should be synonymous with an incubation period. That ends when you start living beyond your means.
I fully favor a system to where graduating HS seniors get the equivalent of an Associate's Degree's worth of college paid for them by Uncle Sam then have the cost deducted from their payroll checks through their careers. This could be used for college or trade school. It's a superior system to what we have now.
However, what we have now is, well, what we have to live with. Expecting to be supported through your college life is, in my view, a foolish expectation and I would also state that you're going to end up much more educated if you don't have such a benefactor.