* Lesson length is determined by the teacher and institution: Schools, universities, and language learning platforms set their own lesson durations. These can vary widely.
* "English lessons" is too broad: English can be taught in many different contexts – from elementary school to advanced university courses. This means the length of the lessons will differ greatly.
* Learning goals influence lesson length: A beginner French lesson will likely be shorter and less intensive than a lesson for advanced learners.
Therefore, there's no standard comparison to be made between the length of French and English lessons.