IS there a way to reset the whole class at once? Like we already did Unit 2 but I want them to do it all over again. This last month of school?
I don’t think there is, but one thing you could do is assign them the curriculum for a previous year (say '18-'19 instead of '19-'20) because progress doesn’t seem to save from year to year.
That’s definitely one option. May I ask why you’re having them do Unit 2 over again? If they’re seeking to improve their performance, it might help them to see their work from the fall. Or if you want them to go further, maybe give them more complex tasks in Web Lab & let them build on what they did previously?