How about something that combines your personal experience in acquiring a degree through distance learning programs and similar options available to prisoners? There is a perception that many prisoners are acquiring degrees while in prison at tax payer expense. However in 1994 a law was passed that barred prisoners from receiving Pell Grants. I'm sure there are lots of questions that arise from this policy that your dissertation could address. You also might have some of your research provided by either UC Davis or Patten University. A program was started by a professor at UC Davis and supported by Patten College. I believe this was before Patten became a for-profit university, but the for-profit Patten University is still the major college providing services to the Prison University Project (PUP).
BA Liberal Studies from Thomas Edison State University