April 17th ? 23rd, 2006:?ETwinning ? Educational Collaboration Across Borders Using Web Based Tools? by Euneos corporation (COMP@CT network), Saariselk?, Finland. Grant by Greek State Scholarships Foundation Socrates II/Comenius Program Action 2.2c.
May 9th ? 13th, 2011: ?ComplexHPC Spring School 2011, HPDC Middleware, Environments, and Tools? by Vrije Universiteit ? FEW, Department of Computer Science, Amsterdam, The Netherlands. Grant by European Cooperation in Science and Technology (COST) Action IC0805.
June 1st ? July 7th, 2016: ?Exploring Access and Equity in U.S. Education and Society? at the California State University in Chico, CA. Participated after being awarded a full scholarship by the Fulbright Foundation of Greece. The program is part of the ?Study of the U.S. Institute (SUSI) for Secondary Educators?, sponsored by U.S. Department of State?s Bureau of Educational and Cultural Affairs.