Evidence-based answer · Last updated · How it’s made
There's no single best way to learn French, but the sources point to a combination that works well: some use of your own language alongside French rather than "French-only" immersion, active vocabulary tools like flashcards and concept maps, deliberate attention to French's tricky sound-spelling links, regular writing practice with feedback, and grammar strategies that draw on everything you already know from other languages. General factors like motivation, teacher quality, and time-on-task matter as much as any specific method.
Asked as someone learning French. Findings drawn from French-specific research are framed for French learners and may not hold for other languages; where the evidence is general second-language research, the report says so.
Contrary to the popular idea that a foreign-language classroom should be 'French-only,' a 10-week study comparing beginner French and Arabic classes found that groups whose teachers allowed some use of the students' native language did better than groups taught in a strictly French-only ('monolingual') way, especially on vocabulary and writing.1,10
A study with French undergraduates found that flashcard-based practice improved vocabulary scores from before to after the intervention, but three different flashcard formats produced statistically similar results, meaning the act of using flashcards mattered more than which specific version was used.2
Because French pronunciation and spelling often don't match in obvious ways, a university study found that regular short written tests during the earliest stage of learning helped students build stronger links between sounds and letters and improved listening recognition, more so than skipping this deliberate practice.3
In plain terms
A large comparison of beginner French learners using a classroom only, an app (Duolingo) only, or both together, was designed to test which combination produces the most gains in general proficiency, vocabulary, and grammar — showing that researchers currently treat 'app plus classroom' as a leading candidate for a well-rounded, low-effort supplement to classroom study.8
Learners who already use multiple languages daily and who draw on their whole 'linguistic repertoire' when learning grammar tend to do better on French grammar tests, and multilingual Irish students transferred reading strategies from Irish to French reading with some benefit.12,14
In plain terms
An action-research study with French-as-a-foreign-language students preparing for exams found that building 'concept maps' — visual diagrams linking related ideas and words — helped students organize new vocabulary, reason by analogy, and process texts more deeply, though the technique didn't transfer perfectly to every situation.7
French learners who kept journals reflecting on everyday activities (chatting, watching shows, socializing) where they used French informally showed that this kind of self-reflection — noticing what they learned, deciding on strategies — helped them get more out of casual, non-classroom exposure to the language.13
Example
A survey-based study of French classes found that better-trained, more proficient teachers using interactive methods (role-play, group discussion, multimedia) were linked to stronger student achievement, and that student motivation and exposure to French outside class were also key contributing factors.9
In French-as-a-foreign-language classrooms, teachers report that digital and multimedia tools help counter students' view of literary texts as boring or inaccessible, and can be used to build reading skill more effectively than text alone.6
Beyond French-specific research, general findings about language learning apply too: learners need years (often 3-7) of sustained exposure to reach real proficiency, learners with little exposure to the language need explicit grammar instruction, aptitude and motivation predict success, and certain teaching methods (like ones that require producing the language, not just receiving it) can level the playing field between learners with different natural aptitudes.4,5,11
Based on these sources, a well-rounded approach to learning French would combine: (1) don't be afraid to lean on your own language or other languages you know as a bridge, especially early on — comparing and translating can speed up vocabulary and grammar learning rather than hurting it; (2) use flashcards regularly for vocabulary, since the format matters less than consistency; (3) in the earliest stages, spend deliberate time connecting French sounds to their spellings through writing and dictation-style practice, since French's spelling system is a common stumbling block; (4) if you use an app like Duolingo, pair it with a classroom or structured course rather than relying on it alone; (5) build visual tools like concept maps to organize new vocabulary and connect it to what you already know; (6) keep a simple learning journal, especially for anything you do in French outside of class (shows, conversations, reading) — reflecting on it helps it stick; (7) seek a teacher who uses interactive, communicative methods, and try to get regular exposure to French outside class, since both motivation and quality instruction were repeatedly linked to better outcomes; (8) expect real proficiency to take years of sustained effort, not weeks — this is a general finding about language learning, not something specific to French.
Now pick something to do it with
Each of these opens an overview of the apps, courses and immersion material worth a look for that — filtered to exactly what the advice above points you at: