Guides

Exam prep guides & strategy

Practical writing, speaking, and scoring guides across IELTS, TOEFL, PTE, Cambridge, OET, Duolingo, SAT, GRE, and GMAT.

Kangoshi 7 min read

Kangoshi Exam: How the 必修 80% Rule Works — and Why Good Candidates Fail It

Kangoshi exam's 必修 80% rule trips up strong candidates every year. Learn exactly how the threshold works, why it causes failures, and how to avoid it.

July 4, 2026

GMAT Focus 7 min read

GMAT Focus Edition: Data Insights — What Changed From the Old GMAT

GMAT Focus Edition Data Insights replaces Integrated Reasoning and removes Analytical Writing. Learn exactly what changed, what stayed, and how to prepare for the new section.

July 4, 2026

GRE 7 min read

GRE Analytical Writing: What Separates a 4.5 From a 6.0 Essay

GRE Analytical Writing scores of 4.5 vs 6.0 come down to argument control, evidence precision, and syntactic variety — here's exactly what ETS scorers reward at each level.

July 4, 2026

SAT 7 min read

SAT Reading & Writing: Evidence-Based Questions Made Simple

SAT Reading & Writing evidence-based questions test your ability to cite textual proof for claims. Learn the exact question types, traps, and strategies to score higher.

July 4, 2026

Duolingo English Test 7 min read

Duolingo English Test: How Adaptive Scoring Actually Works

Duolingo English Test adaptive scoring adjusts question difficulty based on your answers in real time. Learn exactly how the algorithm sets your 10–160 score and what that means for your prep.

July 4, 2026

OET 7 min read

OET Writing: The 4 Sub-Criteria That Decide Your Grade

OET Writing is graded on four sub-criteria. Understanding exactly what each one measures — and how marks are lost — is the fastest way to lift your letter grade.

July 4, 2026