When editing the settings of a lesson activity, I saw there is a very uselful "practice lesson" setting (a practice lesson does not appear in the gradebook.).
However, and unfortunately, I couldn't find the same or a similar setting for quizzes... So I'm writing to you, hoping someone would say I didn't look for it well enough.
I use "quizzes" to create graded activities (if it's not graded, my students won't do it), however I would like to occasionally make some activities optional, without losing my grade settings, depending on what we did in class this year and my students needs.
If anyone has a (start of a) solution, it would greatly help me.