Every three years, the Organisation for Economic Co-operation and Development (OECD) evaluates the educational systems in their member and non-member nations in a worldwide study, the Programme for International Student Assessment (PISA). The next PISA study to measure 15-year-old school pupils' scholastic performance on mathematics, science, and reading will be in 2021.
Components of the 2021 study will be "Financial Literacy", "Information and communication technologies (ICT)", "Mathematics" and, for the first time, "Creative Thinking".
The PISA 2021 draft by OECD says: "... Creative thinking is [...] more than simply coming up with random ideas. It is a tangible competence, grounded in knowledge and practice, that supports individuals in achieving better outcomes, oftentimes in constrained and challenging environments. [...]
Developing an international assessment of creative thinking can encourage positive changes in education policies and pedagogies. The PISA 2021 creative thinking assessment will provide policymakers with valid, reliable and actionable measurement tools that will help them to make evidence-based decisions."
You can find the whole PISA 2021 Assessment and Analytical Framework on the OECD website.