His response is as follows:It is not possible to measure rehabilitation directly and future behaviour is affected by many factors, many of which occur outwith the prison, but two of the Key Performance Indicators (KPIs) of the SPS relate to the work we do to assist prisoner rehabilitation:Programmes to address offending behaviour; the number of programmes delivered and percentage of those which are fully accredited.Education; the number of learning hours delivered.In addition, the work of SPS in the fields of health, medical, nursing, drugs, work, employability and throughcare, will contribute to rehabilitation by encouraging and helping the prisoner to be more responsible.