At the beginning of the study, the researches aimed to find out which data (variables) are most powerful influencers for the Final grade prediction. Key Influencer Analysis is the right and useful tool for the job. Table 2 exhibits the most powerful relative impact for different variables. For example, the last study year (2012–13), where ‘‘Final grade’’ is empty (the authors aimed to predict it) shows ‘‘100’’ relative impact to favor empty column. Similar, high final points strongly favor high ‘‘Final grade’’, and low ‘‘Activity points’’ or ‘‘Exam points’’ favor low ‘‘Final grade’’. The results suggested to eliminate some of these columns from final prediction or at least to try several combination of different columns to produce relevant results.