One Masterclass organized by the Discover the COSMOS,Ellinogermaniki Agogi and teh University of the Aegean took place in the Greek island of Chios on 25th of April. Chios is one of the East Aegean islands with 52000 inhabitants, the “claimed” birthplace of Homer, just a few miles away from the Asia Minor coast. The Masterclass included two morning lectures by the coordinator Prof. C.Kourkoumelis and the Assistant Prof. D.Fassouliotis, a virtual visit to the ATLAS Control room and was followed by an HYPATIA event analysis “hands-on “ workshop where the students analysed real events from the LHC and looked for Higgs particle candidates,. About 40 students from the 1st and 3rd Lyceums of capital of Chios ‘Hora” participated. This was a full day activity was coordinated by Prof. C.kourkoumelis of IASA and Ass. Professor C.Papageorgiou of teh Aegean U. It was followed by a public lecture from Prof. K.Bachas of Ecole Normale Superieure,Paris in the Homirion town center Hall.The events coincided with the Greek International Conference for High Energy Physics (EESFYE) and were followed by a large number of young researchers.