Coming straight from college to law school, I was able to be "independent" by my second year of law school. The first year, my parents had claimed me as a dependent that previous January. The following tax year (so spring of my first year) I filed my own taxes. Using that, my lease, my local phone number, local driver's license and car registration, I was able to get in state tuition. I'm not sure if those laws have changed, this was 10 years ago. I financed law school entirely, still, but the second two years were a fraction of the cost of the first year.