The IPAC methodology allows academics to give an individual mark to students that participated in a group work activity, and this is based on their contributions as seen by their peers. Different formulas are used to combine the “group mark” and the “IPAC value” into the “individual marks”, and the selection is mostly driven by how confident and comfortable the academic staff is giving “power” to the students to influence the final marks. In reality, any scepticism or lack of confidence comes from not knowing how students typically rate their peers. This paper provides insightful information by reporting significant statistical analysis on a large data set of the typical IPAC marks given by the students in several group activities run in 2017/18 across UCL, and what might influence these marks, e.g. the specific method used for IPAC, how it was implemented, the class experience, etc. This is of interest to present and future users of the IPAC methodology
