<human>: Can you condense the text into three sentences or less?

This could easily be 20 pages, but I will try to keep it short.

My brother has always had huge behavioral problems and a lack of motivation.  When he was 15, my parents sent him off to a boarding school as they could not deal with him anymore.

When he wore out his welcome there, he was moved to a military school.  

After that failed and he was kicked out, my parents refused to take him back in and he became a ward of the state.  Under huge supervision and in a group home with round the clock supervision and counseling, he managed to finish High School.

He applied to a state college, and got in, and got free tuition as he was a ward of the state: free room and board, free books, free tuition for 4 years.

6 weeks in, after him telling me every few days when I talked to him how it was going ok, I find out he hasn't attended any classes, he is failing everything, and his free ride will likely be cancelled at the end of the semester, as the only rule was, in effect, "Don't fail all of your classes by not showing up."  It seemed like a pretty easy rule to follow.

My parents will not take him in, they have already made this abundantly clear to he and I.  I have a much older sister, but she has a new born and is in no shape to raise a teenager overall.

I could financially take him in, I have an extra room etc, but I don't want to.  Am I being selfish?  I am only 25, I do not want to raise a troubled teenager.  Moreso, he has shown time and time again he will not change and probably has no ability to hold down a job, so this would in all likelihood be a permanent thing, caring for him for years or more.

I do not know what to do.  I feel as though I cannot in good conscience let him be homeless, but other than committing the rest of my life to caring for him, I see no other options.
<bot>: My brother is being kicked out of college in 2 months, my parents will not take him back, he will be a permanent fixture in my home if I allow him to stay with me.  What do I do?