What is Slow Horses S2-4's IQ Score?

Slow Horses S2-4 has an IQ Score of 163/200 on TV Intelligentsia's Intelligence Quotient framework, placing it in the Masterclass tier. The score breaks down to 43/50 Cognitive Stimulation, 36/50 Educational Value, and 44/50 Craft & Quality.

Is Slow Horses S2-4 educational?

Slow Horses S2-4 is strong on educational value, 36/50 on TVI's rubric, which covers academic content, emotional intelligence, critical thinking, life skills, and knowledge transfer.

How does TV Intelligentsia calculate IQ Score?

TV Intelligentsia's IQ Score is calculated as round((Cognitive Stimulation × 0.4 + Educational Value × 0.35 + Craft & Quality × 0.25) × 4), scoring titles from 0 to 200 across five tiers: Masterclass (≥160), Stimulating (≥130), Competent (≥100), Passive (≥70), and Numbing (<70). The framework is published at tvintelligentsia.com/methodology/.

Slow Horses S2-4 , IQ Score 163/200

Slow Horses S2-4 has an IQ Score of 163/200 on TV Intelligentsia's Intelligence Quotient rubric, placing it in the Masterclass tier.

By Jordan Robinson, MD, MPH·Updated 2026-06-17·Methodology

thrillerdrama

163/ 200

Masterclass

Measurably increases domain knowledge or cognitive capacity

Score Breakdown

Cognitive Stimulation/50

Educational Value/50

Craft & Quality/50

IQ = round((Cognitive × 0.4 + Educational × 0.35 + Craft × 0.25) × 4) · How we score →

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Why you should trust this score

Scored under Jordan Robinson, MD, MPH

Physician and founding editor. Maintains the adult catalog against the published rubric and reviews the rubric application.

Methodology

Published rubric, v1.2

Formula

round(C × 0.40 + E × 0.35 + Q × 0.25) × 4

Database scale

2,338 titles, version-controlled

How we stay independent. We accept no studio money. We pay for our own streaming subscriptions. Our reviewers see no sponsor data, no affiliate revenue, and no screener access in exchange for coverage. More about how we work →

The TVI Take

The later seasons of Slow Horses, the Slough House team faces increasingly significant threats. Gary Oldman remains exceptional.

The quality is consistent across all seasons. Mick Herron's novels provide strong source material.

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