The student is not saying that he wants to finish school early because he does not like his parents or homelife. He has probably experienced jobs and situations that the more traditional student has not been given the time to try. I have also noticed that overall, girls want to accelerate their education sooner than boys. I think, instead, that once girls have begun puberty, their bodies go through a lot of changes. And just as the body is changing, their thinking process is going through many changes.
Girls seem to start the maturity process towards adulthood sooner than boys do.
And the girls want to start building what I call 'their nest' settling decisions about post high school life. With boys, it seems their inner time clock chimes at a different, later time, at about 11th grade. For girls, usually about the time they begin 9th grade, they begin the process of formulating goal-oriented ideas and settling down. Boys usually wait a couple more years. Some students do want to move into the local college arena earlier but wish to retain the security and balance of homelife while making the adjustment.