This paper aims to familiarise the readers with the motivations and pedagogical principles behind the outcomes of the ‘SCALED – Supporting Content and Language Learning Across Diversity’ project and with the outcomes themselves. These include an open online course for initial teacher training and continuing professional development of language teachers, accompanied by a methodological guide and a report on good practices in inclusive language education and inclusive foreign language teacher training. The SCALED project addresses the needs of both the academic and school communities, aiding educa- tors in proactively eliminating existing and potential barriers to language learning. It incorporates empirically validated models and approaches, such as Universal Design for Learning (UDL) and the integration of indi- vidual accommodations and adjustments in learning and assessment conditions. The project seeks to advance fairness and counter discrimination and marginalization by fostering inclusive practices in teacher training and language education via enhanced accessibility. Accessible language learning environments can empower individuals with diverse needs, including special educational needs, and enable them to unleash their abilities and potential. Accessibility constitutes a leading theme that transpires in all SCALED course modules and materials, from accessible instruction and assessment, through accessible and usable digital language materials (docu- ments and multimedia) and online learning platforms to accessible and supportive language learning environ- ments (e.g. assistive technology) for learners with special educational needs resulting from dyslexia, ADHD, autism, blindness and visual impairments, and diverse cultural and language backgrounds.