The project Assessment of Transversal Skills (ATS2020) is developing a comprehensive learning model to enhance students' transversal, 21st century skills across diverse EU national curricula. This includes the provision of teachers with modern approaches and innovative tools for the development and assessment of these skills. The ATS2020 learning model is being piloted in 10 participating countries in 2016 and 2017, focusing on students aged 10 to 15 years. ATS2020 is co-funded by the Erasmus+ programme of the European Union.