Our methodology
Every difficulty rating, hours estimate, and show recommendation on LingoBinge is graded by one consistent, source-backed method, and this page explains exactly how it works.
Key takeaways
- Difficulty is a CEFR band from A1 to C2, set from how a show actually sounds, not a scraped score.
- Hours-to-learn estimates come from the US Foreign Service Institute study categories.
- Every factual claim is written by one named author and backed by a cited source.
- We never use fake reviews or invented star ratings.
How we rate difficulty
Every show carries a CEFR band from A1 to C2. We set it from how the show actually sounds, not from any scraped score: how fast people speak, how much slang and idiom they use, how clear the audio is, and how much the on-screen action carries the meaning. The band is a learner-facing guide so you can pick something at or just above your level.
| Level | What it means for watching |
|---|---|
| A1 | Beginner: recognise basic everyday words and very simple phrases. |
| A2 | Elementary: follow slow, clear speech on familiar, routine topics. |
| B1 | Intermediate: follow the gist of clear standard speech in calmer shows. |
| B2 | Upper intermediate: follow most shows at natural speed with some effort. |
| C1 | Advanced: follow fast, idiomatic speech and most slang with ease. |
| C2 | Mastery: understand effectively everything, including rapid native speech. |
Where the hours estimates come from
Our hours-to-learn figures come from the US Foreign Service Institute, which groups languages by how long its students take to reach professional working proficiency. They assume intensive, guided study, so we treat them as honest benchmarks rather than promises. These are the same numbers shown on each language hub.
| Language | FSI study hours | Difficulty for English speakers |
|---|---|---|
| Indonesian | about 900 | Easier |
| Spanish | about 600 | Easier |
| French | about 600 | Moderate |
| Japanese | about 2200 | Harder |
| Korean | about 2200 | Harder |
How we choose shows
We only list shows that are genuinely available in their original audio, pick a spread across levels and genres so there is something for every learner, and write a real reason each one works for learning. The verdict you read is an editorial judgement about whether a show is good practice, never an aggregated rating.
Sourcing and editorial policy
Our learning content is written and reviewed by one real, named author, Lachlan McRitchie, Founder, LingoBinge. We never invent personas or publish fake reviews. Where a page makes a factual claim, such as a difficulty estimate or a statistic, it is grounded in a cited source. You can read more about who builds LingoBinge.
How we keep it current
We review content on a schedule and show an honest Updated date on every page. That date is the same one used in the sitemap, so a page can never claim to be fresher than search engines are told it is.
Frequently asked questions
- How do you decide a show's CEFR level?
- We set an honest CEFR band from how the show actually sounds: speech speed, how much slang and idiom it uses, audio clarity, and how much context carries the meaning. Slow, narrated, period, or children's shows tend toward A2 to B1; fast, colloquial, slang-heavy shows toward B2 and above. The band is a learner-facing guide, never a scraped rating.
- Where do your hours-to-learn estimates come from?
- From the US Foreign Service Institute, which has measured how long its students take to reach professional working proficiency in each language. These assume intensive, guided study, so we present them as honest benchmarks rather than promises, and conversational ability comes well before the full figure.
- Do you use real reviews or star ratings?
- No. We never publish star ratings or reviews we do not have, and our structured data omits them by design. Show verdicts are editorial judgements about learner suitability, not aggregated scores.
- How often is the content updated?
- We review and refresh content on a schedule, and every page shows an honest Updated date that matches its sitemap entry, so you can always see how current a page is.
Updated June 28, 2026