Prisoners are sent to the Maine State Prison using the following criteria (effective 1/2002):
- Unsuspended portion of sentence exceeds five (5) years.
- Escape conviction(s) or known escape attempt(s) from a medium or higher security facility.
- Prisoners with special needs will be referred to the Director of Classifications. Prisoners with special needs include, but are not limited to, subjects with severe mental, emotional, or physical disabilities or about whom there is information indicating that placement in a particular facility might pose a threat to the safety of the prisoner or another person.
- The prisoner has been released from a correctional facility within the last three (3) years and at the time of release the prisoner was classified as close or maximum custody.