I had the recent opportunity to work on this case study published jointly by Intel, Dell and Motion Computing that reviewed how information technology investment by Correctional Health Services Corporation in Puerto Rico drove a transformation of their health services in their prison system.
There are tons of case studies out in market and web but to me this one stood out in it's dramatic impacts from improved efficiency of employees and workers at the prison, improved health care of inmates, the ability to meet minimum documentation standards, and a lowering of costs to manage the IT infrastructure.
If you read one case study this year .. this one is recommend. Definitely a feel good story all around. http://www.intel.com/references/pdfs/Correctional_Health_casestudy_LRs.pdf