To pass a lesson, you need to complete its activities and score at least 70% in its exercises. Depending on the type of lesson, this means you will need to watch the video, read any grammar rules, pass the exercises, etc.
Some lessons contain a summary test of the vocabulary seen in the lesson. You must score at least 70% in this test to pass the lesson, but you do not need to score over 70% in the other exercises to pass. We recommend you still complete them to improve your knowledge or to review the material. If you are following a course as part of a specific programme or at the request of your institution or employer, you may be required to complete specific lessons. Be sure to check with your training organisation about the validation criteria.