The result of over twenty years of research, the Common European Framework of Reference for Languages: Learning, teaching, assessment (CEFR) is exactly what its title says it is: a framework of reference. It was designed to provide a transparent, coherent and comprehensive basis for the elaboration of language syllabuses and curriculum guidelines, the design of teaching and learning materials, and the assessment of foreign language proficiency.
L. He, M. Mavrikis, und M. Cukurova. Artificial Intelligence in Education. Posters and Late Breaking Results, Workshops and Tutorials, Industry and Innovation Tracks, Practitioners, Doctoral Consortium and Blue Sky, Seite 327--333. Cham, Springer Nature Switzerland, (2024)