Surveys and evaluation are crucial for the success and continuous improvement of the eTwinning project "Health Boosters." They provide valuable feedback from participants, including students, teachers, and partners, offering insights into what aspects of the project are working well and where improvements can be made. By systematically collecting and analysing this data, project organisers can assess the effectiveness of activities, the engagement levels of participants, and the overall impact on learning and health awareness. This process ensures that the project objectives—such as developing various literacies, encouraging the use of technologies, enhancing communication skills, and promoting healthy lifestyles—are being met effectively. Additionally, surveys and evaluation help in identifying best practices and potential challenges, facilitating a reflective approach that drives future planning and decision-making. Ultimately, they contribute to the project's sustainability and success, ensuring that "Health Boosters" continues to provide meaningful and impactful educational experiences.