Letterboxd Has a Rating. TV Intelligentsia Has a Rubric.

Letterboxd ratings: audience opinion, aggregated

Letterboxd's 5-star rating is what cinephiles give a film after watching. The site aggregates millions of these ratings into a per-title score that reflects audience opinion. The strength of the system is its scale and authenticity, real people, real reactions, real engagement. The site has shaped how a generation of film viewers logs and shares their viewing.

The limits are also real. A 4.5-star rating tells you a lot about how the audience felt and not much about the film's structural quality. Inception and The Boss Baby can both score 4 stars from different audiences. A rating system can't separate "intellectually rigorous" from "popular" because it doesn't measure either dimension independently.

The TVI IQ Score: published rubric, three dimensions

The TVI IQ Score is a 0-200 weighted composite of three measured dimensions, scored against a published rubric:

• Cognitive Stimulation (40% weight): narrative complexity, inferential demand, attention sustained across multi-layer plotting.
• Educational Value (35% weight): academic content, emotional intelligence modeling, critical thinking, life skills, knowledge transfer.
• Craft and Quality (25% weight): direction, performance, cinematography, sound design, structural rigor.

Each sub-score is 0-50. The final IQ Score is round((C × 0.4 + E × 0.35 + Q × 0.25) × 4). Titles land in one of five tiers: Masterclass (160+), Stimulating (130+), Competent (100+), Passive (70+), Numbing (under 70).

The catalog scores 2,270 titles. The full methodology is published at /methodology/, signed by named reviewers (Jordan Robinson, MD, MPH for adult content; Cordelia Witty, EdS., NCSP for children's content).

Side-by-side, what each measures

Question	Letterboxd	TVI
What's the unit?	5-star user rating	0-200 IQ Score across 3 weighted dimensions
What does it measure?	Audience opinion, aggregated	Structural quality on a published rubric
Who scores it?	Every user who rates	Two credentialed reviewers + computational analysis
Methodology published?	No (rating is opinion)	Yes, full PDF + HTML signed by reviewers
Per-title transparency?	Aggregate score only	Three dimensional sub-scores + thirteen sub-dimensions
Useful for?	Following critics, logging history, social discovery	Comparing structural quality across films, decades, genres
Best together?	Letterboxd for logging, TVI for structure. Import your Letterboxd to TVI to get both.

The practical case for layering them

The interesting question isn't "which is right." It's "what does each tell you the other can't?"

A film with 4.5 stars on Letterboxd and a TVI IQ of 105 is broadly enjoyed but not structurally demanding. The Boss Baby is the canonical example here. A film with 3 stars on Letterboxd and a TVI IQ of 187 is structurally rigorous but doesn't have broad audience consensus. The Tree of Life sits in this quadrant. Some films land high on both: Cosmos (200/200, 4.7 stars), Chernobyl (197/200, 4.5 stars). A few notable films land high-TVI-low-Letterboxd, the canonical "demanding but the consensus hasn't caught up" pattern.

What you do with this depends on what you're optimizing for. If you're scrolling a streaming service looking for tonight's watch, Letterboxd's audience rating tells you what people like you have enjoyed. If you're building a viewing diet that compounds intellectual fitness over decades, the TVI IQ Score tells you which titles are doing the structural work.

How to import your Letterboxd profile to TVI

The TVI catalog scores 2,270 titles against the published rubric. If you have a Letterboxd account with watched-films history, you can import that history into TVI in two steps:

1. On Letterboxd, go to Settings → Data → Export Your Data. Letterboxd produces a .zip file containing your watched.csv, ratings.csv, and diary.csv.
2. On TVI, go to /import/, drop the .zip into the upload area. The matcher parses your history, matches every title against the TVI database, and computes your Letterboxd IQ profile across the three dimensions.

The matched history persists to your browser. Every TVI title page you visit thereafter reflects your watched status. Your Personal IQ Dashboard at /my/ shows your full profile. The data is local to your device, no account creation, no email required.

Why this matters for Letterboxd users specifically

Letterboxd users self-select as serious-about-film. They already rank, log, and discuss what they watch. The TVI IQ Score adds a dimension Letterboxd doesn't measure: structural rigor on a published rubric. The two tools work together, not as substitutes. The Letterboxd rating tells you what the audience felt. The TVI IQ tells you what the work is doing.

For founders, journalists, and creators who use Letterboxd to shape taste: TVI's TVI Essential designation is the editorial overlay that names which titles meet a higher structural standard across Cultural Impact, Intellectual Substance, Rewatch Value, and Lasting Significance. 129 titles in the inaugural class. Many of them you have probably already watched. Some of them you have not.