I am writing a paper on how convicted felons can change their lives and become successful. Where can I find out how many are successful?
You may need to define success for the purpose of your study. NEO Cando is a local resource that may be helpful in measuring local recidivism rates, but there may not be one other standard of "success" by which to measure. You may also be able to use databases like Psychology and Behavioral Sciences Collection to find articles that feature survey's of convicted felons.
The Law Enforcement Guide has links to both of these resources.