Cramming feels productive, but it’s the least effective way to learn biology. Here’s a neuroscience-backed strategy built on spaced repetition and active recall.

Command terms are a code that dictates the depth and structure of your response. Learn the hierarchy and avoid the “Describe vs Explain” trap that costs marks.

A fixed-form diagnostic plus percentile grading gives you the “pressure of the pack” that normal quizzes can’t. Learn how the cohort threshold, first attempts, and instant feedback work.

Under the hood: how we compute percentile rank from first attempts, then map it to an IB 1–7 grade using admin boundaries—so a hard paper is graded fairly.