Mykola Pechenizkiy Toon Calders Ekaterina Vasilyeva Paul De Bra Mining the Student Assessment Data: Lessons Drawn from a Small Scale Case Study. 187-191 2008 EDM http://www.educationaldatamining.org/EDM2008/uploads/proc/20_Pechenizkiy_26.pdf conf/edm/2008 db/conf/edm/edm2008.html#PechenizkiyCVB08