I often discuss the topic of fluency in a language with my friends and family. I personally have a scale for fluency that my friends agree with, which I’m going to discuss in this post. This is related to my beliefs on what proficiency tests should call what level of competency in a given language. There are several tests, such as the TOEFL (Test of English as a Foreign Language), the examinations for DELEs (Diplomas de Español como Lengua Extranjera – Diploma for Spanish as a Foreign Language), and DILF/DELF/DALF (French Language Proficiency Diplomas). Note that each level fluency implies speaking ability. One is not fluent in reading a foreign language, that is literacy. One cannot be considered fluent in a language if they can only understand the language, but cannot speak and make conversation. Fluency encompasses all forms of communication in a foreign language, including reading, as well as writing, speaking, listening. Disclaimer: This is largely based off of my discussions with my friends and family, my readings, observations, and personal views on language. This is not meant to be taken as a definitive scale either; this is flexible, as every language is different, with its own quirks and challenges.
Level 1: Basic (~1 year)
You can communicate on a very simple level, and understand slightly more complex conversations. Reading ability is limited to simple children’s books, short public notices/advertisements, and you can write simple things, such as short notes.
Level 2: Upper Basic (~2 years)
You can now participate in more complex conversations including the use of the past tense(s) and present tense. You can also issue commands. You can now read and write simple paragraphs and your vocabulary is expanded, but limited to local situations, and broader, more abstract topics are harder to understand.
Level 3: Intermediate (~3 years)
You can initiate conversations with relative ease, express a set variety of emotions in the target language, and respond to semi-complex questions. You demonstrate command over the use of present and past tenses, and the subjunctive (or equivalent), as well as some compound tenses. You can also write longer passages, and understand a wider variety of texts, including short novellas and simple essays. Your vocabulary is wider, but doesn’t include very abstract or complex topics, such as religion or politics. You understand most, if not all, of what is said to you in the target language.
Level 4: Competent (~5 years study)
Your knowledge of tenses has expanded to include more complex tenses, and you have an increased understanding of the subjunctive (or equivalent). Your vocabulary is now nearly complete, being able to discuss nearly all topics with ease. You can write complex essays, read somewhat scholarly texts with a moderate level of understanding. Your speech is nearly accent-free (that is, your native accent). You can participate in conversations with little to no difficulty, and others involved can understand you completely.
Level 5: Native (~6-7 years)
You have a complete understanding of all the grammar in the target language, and you have a complete set of vocabulary to discuss all topics without any difficulty whatsoever. You can read extremely long passages in the target language (such as novels and longer essays) and write comprehensive responses that demonstrate a higher understanding of the test. You effectively sound like you grew up speaking in the native country of the target language (depending on which variety or dialect you learn). You participate in extended conversations about complex or abstract topics, and can switch in and out of the target language with ease.
Level 6: Scholar/Intellectual (9+ years)
Your vocabulary is expanded to include higher level words, such as more complex or poetic synonyms for ones you already know. You can read and write scholarly texts in the target language, and participate in extended discussions on such topics with ease. You would be fit to be a professor in the language, nearly without exception.