"Team leaders not only act as translators of the Olympiad tasks, but also act as experts in their natural science disciplines. Their competencies allow them to actively participate in the discussion and correction of various aspects of assignments. For example, the texts of the tasks on the structure of the cell and its components in the Russian curriculum may differ from those accepted in Saudi Arabia, Qatar or Egypt. Therefore, when preparing tasks, edits are often required, since some topics in other countries are studied differently or they are not included in the program at all. The role of the team leader in this process is extremely important: it ensures the creation of a unified approach to the formulation of questions that will be correct for the students," said Sayed Fathy Mohamed Mohamed, an observer from Qatar.