Is it the parents duty to make sure they goto school after they are 18?  

I always discuss topics from life experiences, because I have been effected in one way or another.
I was raised by foster parents due to a personal choice that I felt my parents could no longer be responsible parents. I was 14, so it was my choice.
However, I am also increasingly aware of family members that I have that do not intend to provide their children with continuing education, due to the fact that they cannot afford it, or lack a formal education themselves.
I chose not to have children because of these concerns, because I feel being responsible, included a great deal of consideration for the next generation which I even currently could not provide.
So, how are parents dealing with this issue? I am curious. It is notto late for me not to have children, but this is something I have never been able to get a grasp on.
any experiences out there?