At the Particle Physics Masterclasses participants analyse real data from CERN. If you are planning to have a Masterclass at your school or institution, it is recommendable to prepare students in advance for this event. The hand-out contains of a description of the research task, a short instruction for the software that is used and information about the Standard Model of particle physics.
Please download the hand-outs here: http://www.teilchenwelt.de/material/materialien-fuer-lehrkraefte/handouts-fuer-teilchenphysik-masterclasses/