Lessons, Quizzes and Assignments should be translated first before Courses. Otherwise, translations are not synchronized within the Courses.
To translate lessons with WPML, select Lesson for translation in the Translation Management section of the WPML plugin and click Filter.
Then choose the lesson you want to translate.
Scroll down, choose Translate and click Add to translation queue.
Go back to the Translations section of the WPML plugin.
Click Translate for the lesson you want to translate.
Add the translation to the statement that you need and save by clicking on the tick button.
After adding all translations, click Complete.
That's how it will look for your students.
