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Fluency

Fluency was a feature of Duolingo. It was an estimated measure of proficiency of the vocabulary, grammar, comprehension and the ability to produce the language[1]. As of April 2018, the fluency score was only available in Spanish, German, French, Portuguese, Italian, English, Polish, Danish, and Swedish[2]. It was replaced in April 2018 by the Crowns system.

Metrics used[]

The metrics used to estimate user's fluency included[3]:

  • progress in a course;
  • accuracy of answers;
  • frequency of practice;
  • words learned; and
  • importance of words in the language.

Score[]

The fluency score would either increase through continued practice or decrease if the user doesn't regularly practice. As of April 2018 one could only reach a fluency as high as 65%, which according to Duolingo is equivalent to an advanced proficiency in the Duolingo Test Center[1].

References[]

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