Duolingo Schools: How long do you start out giving students to complete a skill set?

[PATH2019]

I am going to have my students learn by skill set instead of time. When I make my assignments , how long do you usually give to have that assignment completed? I understand it will probably change as we go through the year but what do you all suggest for starting out? Thanks ahead of time.

[Thomas.Heiss]

Duplicate: https://forum.duolingo.com/comment/32948639