There's a bookstore/secondhand shop where I live that basically has this premise. They hire kids who've aged out of the foster system or are about to so that they can get some work experience, the idea being to involve them really closely in the running of the business so that they learn skills they can take with them. My understanding is they also have programs for life skills and generally getting on their feet. I try to donate and shop there as much as I can because they do such important work. I could totally see where a farm would lend itself really well to this too.