Software Process Improvement Programs provide many benefits to the companies investing in this type of activities.One of the main problems in relation with SPI Value Management consists of the difficulty to convince senior management to invest in this type of programs. This issue is solved by means of benchmarking with successful histories by means of case studies. The information of current of SPI case studies is very heterogeneous, making this task so difficult. This paper presents a technique to formalize the information enclosed in an SPI case study providing an easy access to the relevant information of a SPI case study. Moreover, the results, obtained from its application with pre-existing case studies are provided. This work has been partially supported by the Spanish National Project “Software Process Management Platform: modeling, reuse and measurement” (TIN2004-07083).