My wife and I are both doing Duolingo french. She is further ahead than me, but her fluency rating is 16% while mine is (supposedly!) 44% . Can someone explain why this is please?
Duolingo's Fluency % is unreliable.
Recently appeared that the Duolingo staff had manipulated this "fluency %" for testing purposes (https://www.duolingo.com/comment/22225104)
You and your wife might be in two different Duolingo test groups.
That is why I only use the decrease of fluency % as a warning. When the % is decreasing, I do too few lessons or strengthen in the web version of Duolingo.
Duolingo's fluency % is a nonsense number.
It says nothing about your fluency in the real world.
But when I use Duolingo's web version (www.duolingo.com), I see Duolingo's Fluency % much faster increasing than in the App. That is because you learn much more from typing the answers than from choosing predefined words.
Duolingo will only bring you to an A2/B1 skill level in reading/writing and A1 (maybe A2) in listening/talking.
Info about language levels: https://en.wikipedia.org/wiki/Common_European_Framework_of_Reference_for_Languages
Read from "Common reference levels".
However, I think Duolingo's courses are excellent.
Just enjoy the courses and don't worry about Duolingo's fluency %.