I left out this last variation.
The participating pupils will take turns informing not only their classmates but pupils from all classes, whether in the project or not, about the activities of the project, as well as their results.
Can you consider also this possibility, because I don't know which to include yet.
The participating pupils will take turns informing both their classmates and pupils from parallel classes, whether in the project or not, about the activities of the project, as well as their results. Intermediate reports will be given during meetings with both teachers and parents.
Thank you for now.