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How Duolingo Leaderboards and Leagues Work

We live to compete. What I learned by winning the Duolingo diamond league, by Karolina Kozmana

How to progress in leagues - Page 2 - Duolingo Forum

20 things I've learnt after using Duolingo for 200 days – Liz Learns Welsh

What Are The Leagues in Duolingo? Gamified Language Learning Experience - Language Learning Apps

It's time to talk about some Duolingo updates – Post-Millennial Panda

Lukas' weblog

Is There Cheating on Duolingo?

The 26 Leagues Of Duolingo

Mark Britt on X: I advanced to the Emerald League on Duolingo / X