The article reports on the evaluation results of selected eLearning courses. Evaluated courses were designed for students as well as adults studying at secondary vocational schools. Courses were created by a professional company in cooperation with the secondary school teachers. This article defines and refines criteria for evaluation of eLearning courses. Our criteria are grouped into following sections: information about the course itself - basic and extended, technical aspects, didactic aspects, content aspects, user friendliness, control panels and multimedia, communication and course management. Data for evaluation of each section is gathered through electronic questionnaires. An evaluation tool is then used to evaluate the gathered data. This tool was developed at our department and is available online. Data from evaluation of selected courses was subjected to analysis and the results were provided to the schools, professional company developers and to the author of the evaluation tool as a feedback. [ABSTRACT FROM AUTHOR]