The research project ‘Making the CEFR/CV more user-friendly: fine-tuning descriptors with Learner Corpus Research (LCR) results’ (Project PID2020-117041GA-I00 funded by MCIN/AEI/10.13039/501100011033) organizes an international SIG Meeting on the use of the CEFR descriptors in the learning, teaching and assessment of languages and the results obtained. Special attention will be paid to CEFR descriptors supplemented with learner language information obtained thanks to Learner Corpus Research. This hybrid workshop will take place at the University of Jaén (Spain) on 26th April 2024 in a hybrid format (face-to-face and online via GMeet).