| CEOI 2004 - Rzeszów, Poland | | 3 | 7 |
| CEOI 2005 - Sárospatak, Hungary | | 2 | 6 |
| CEOI 2010 - Kosice, Slovakia | | 2 | 6 |
| CEOI 2011 - Gdynia, Poland | | 2 | 6 |
| CEOI 2012 - Tata, Hungary | | 2 | 6 |
| CEOI 2013 - Primošten, Croatia | | 2 | 6 |
| CEOI 2014 - Jena, Germany | | 2 | 6 |
| CEOI 2015 - Brno, Czechia | | 2 | 6 |
| CEOI 2016 - Piatra Neamț, Romania | | 2 | 6 |
| CEOI 2017 - Ljubljana, Slovenia | | 2 | 6 |
| CEOI 2018 - Warsaw, Poland | | 2 | 6 |
| CEOI 2019 - Bratislava, Slovakia | | 2 | 6 |
| CEOI 2020 - Nagykanizsa, Hungary | | 2 | 6 |
| CEOI 2021 - Zagreb, Croatia | | 2 | 6 |
| CEOI 2022 - Varaždin, Croatia | | 2 | 6 |
| CEOI 2023 - Magdeburg, Germany | | 2 | 6 |
| CEOI 2024 - Brno, Czechia | | 2 | 6 |
| CEOI 2025 - Cluj-Napoca, Romania | | 2 | 6 |