The aim of this paper is to document the methodology applied in the evaluation of an online learning environment developed to meet the language needs of students of the Vocational Lyceum (EPAL). The evaluation of the platform "Glossa for EPAL" took place throughout the development of the project. In parallel with the ongoing evaluation of the design and implementation by the project team, all components of the application have been evaluated by potential users as to the adequacy and quality of the linguistic material, user friendliness and overall system functionality.