Symposium Organizer-Chair: Applications of social justice in school communities: Linking universities and school units to support school communities based on emerging psychosocial needs during challenging times and highlighting best practices: Presented at the 7th Panhellenic Conference of Developmental Psychology, October 17–20, 2024, University of West Attica, Athens.

Symposium (invited) Organizer-Chair: Protective factors and positive behavior in schools:Research Findings and Applications for Promoting Well-Being in the School Community. Presented at the 8th Panhellenic Conference of Counseling Psychology & 3rd Panhellenic Conference of Positive Psychology, Panteion University, Athens, November 9–12, 2023.

Symposium Organizer-Chair: Crisis intervention in school community: Connecting theory, research and practice during COVID-19 pandemic. Presented at the 18th Panhellenic Conference of Psychological Research of the Hellenic Psychological Society, September 5-9, Athens.

Symposium Organizer-Chair: Training and the role of school psychologists: Current trends, challenges and prospects. Presented at the 17th Panhellenic Conference of Psychological Research of the Hellenic Psychological Society, May 15-10, Alexandroupolis.

2015

Symposium Organizer-Chair: Graduate student special session: Fostering international involvemnet and collaboration. 44th International School Psychology Conference,July 5-8 , Bologna, Italy

Symposium Organizer-Chair: An integrative approach for linking training, supervision, research and practice:Critical aspectsand implications. 44th International School Psychology Conference,July 5-8 , Bologna, Italy

Critical issues in School Psychology Training: A multilevel approach of linking theory, research, training and practice at a national and international level. Roundtable, 44th International School Psychology Conference, July 5-8, Bologna, Italy

Hatzichristou, C., Hughes, T., Song, s., Malone, C., Jimerson, S. Roundtable Organizer-Chair.The future of international school psychology. A dialogue of the 2023 Future Conference at ISPA.44th International School Psychology Conference,July 5-8, Bologna, Italy

Symposium Organizer-Chair:Fostering international involvement and collaboration.43rd International School Psychology Conference, 7-10 July, Leuven, Belgium.

Roundtable organizer-chair. Multicultural and international training in school psychology programs: Trainers' and students' perspective. 42nd Annual Hybrid Conference of the International School Psychology Association,July 13-16, Nicosia, Cyprus.

Chair of the Leadership Workshop: Strategic planning for the Future of ISPA: Developing action plans during the pandemic period. 42nd Annual Hybrid Conference of the International School Psychology Association,July 13-16, Nicosia, Cyprus.

Hatzichristou, C., Jimerson, S., Dunsmuir, S., Kammerer, I., Gawrilow, C., Blanc, I., & LeMezec, V. Roundtable Organizer-Chair. Training in school psychology: Programs of studies and international considerations.Roundtable, 41st International School Psychology Conference,July 9-12, Basel, Switzerland

Symposium Organizer-Chair:Interventions promoting psychosocial adjustment of vulnerable students and positive school climate.41st International School Psychology Conference,July 9-12, Basel, Switzerland

Roundtable organizer-chair. Graduate student special session: Seeking your ideas to foster international involvement and collaboration. 41st International School Psychology Conference,July 9-12 , Basel, Switzerland

Roundtable organizer-chair. ISPA Trainers of School Psychology Interest Group: Current initiative and future projects. 39th International School Psychology Association Conference, July 19-24 Manchester, UK

Roundtable organizer-chair. School-based consultation in the 21st century: Perspective of an international panel.39th International School Psychology Association Conference, July 19-24 Manchester, UK

Symposium Organizer-Chair: Supporting school adjustment and psychological well-being of vulnerable students. 39th International School Psychology Association Conference, July 19-24 Manchester, UK

Co-Chair of the Local Organizing Committee of the 27th International School Psychology Colloquium organized by the Department of Psychology, National and Kapodistrian University of Athens and the International School Psychology Association, July 13-17, Athens, Greece.