Syllabus Topic Analysis

Which topics actually get tested.

Past-paper frequency by syllabus topic, updated each session — so your revision hours go where the marks are.

Sample data. The percentages below show what this page will look like. They are not from real past-paper tagging yet; the first data release replaces them.

Paper frequency · last 5 sessions

By subject

Physics HL

Mechanics still rules Paper 2

Mechanics
92%
Fields
74%
Waves
68%
Quantum
41%
Chemistry HL

Energetics is never optional

Energetics
88%
Organic
81%
Kinetics
63%
Periodicity
47%
Math AA HL

Calculus carries the paper

Calculus
95%
Functions
79%
Probability
66%
Vectors
52%
Biology HL

Genetics keeps compounding

Genetics
86%
Cells
77%
Ecology
59%
Physiology
55%
Economics HL

Macro dominates Paper 1

Macro
84%
Micro
78%
Global
61%
Development
44%
English A · Lang & Lit

Paper 1 text types, ranked

Advertisement
71%
Opinion piece
65%
Infographic
58%
Speech
49%
Methodology

How these numbers are made

Source

Past papers, tagged by hand

Every question from the last five examination sessions is tagged to its syllabus topic by two independent reviewers; disagreements go to a third.

Metric

What the percentage means

"92%" means the topic carried marks in 92% of papers sampled — presence, not weight. A topic can appear rarely but heavily; read the bars alongside your subject guide.

Caveat

Frequency is not a syllabus

The IB can examine anything in the guide, and syllabus updates reset history. Use this to order your revision queue — never to skip a topic.