2026–2027 Edition · Format verified August 2026
Master the Duolingo English Test with a system built for the current test
The complete self-study system covering all 13 current question types — with 300 original practice questions, model answers, and 14-day & 30-day study plans. One purchase, three ways to learn.
Independent publication — not affiliated with Duolingo, Inc.
One purchase. Three products.
Everything unlocks with a single account — read, practice, and prepare wherever you are.
Downloadable eBook
The complete 160-page PDF — professionally formatted for offline study, with every practice question, answer key, audio script, and study plan tracker.
Available now
Smart Online eBook
The same system as a premium online reader: automatic progress, Continue Reading, bookmarks, highlights, notes, saved vocabulary, and revision mode.
Coming to your dashboard soon
Interactive Practice Platform
Practice every question type interactively — with playable audio, timed drills, writing and speaking practice, a diagnostic, and personalized study plans.
Coming to your dashboard soon
Why this system is different
Verified against the current test
The DET changed substantially on July 1, 2025 — most preparation material online still teaches question types that no longer exist. Every format fact in this system was verified against official sources in August 2026, and the book shows you how to spot outdated materials yourself.
All 13 question types, one framework
Every question-type chapter follows the same fifteen-part structure: what it is, what you see on screen, how it's scored, step-by-step strategy, time management, common traps, worked examples, and full practice sets with explained answers.
No tricks — real English, measured honestly
The DET's scoring engine is trained on millions of responses; tricks don't survive contact with it. This system improves the observable features that actually score: grammar accuracy, vocabulary range, organization, and fluency.
A plan for your timeline
30+ days out? 14 days? Under a week? The book routes you to the right path, with a diagnostic to find your weak areas and day-by-day plans that front-load what moves your score most.