The Battery Exam is a required individual event at the Olympiad. For all age divisions, it counts towards the individual Olympiad Championship: it is one-third (for Middle School, Intermediate and Elementary division students) and one-quarter (for Varsity and Junior Varsity students) of the Olympiad Championship calculation. The Battery, however, is also an event in its own right, with 250-400 multiple-choice questions (depending on age division) on all aspects, eras, and places in history. Note that the Battery is also used, in part, though not exclusively, to determine seedings in the International History Bee World Championships. The preliminary round results of the International History Bee World Championships will then determine the composition of teams for the International History Bowl World Championships and the Hextathlon.
Normally, the top three students from a country or state will form the A Team for that country or state, the next top three scoring students will form Team B and so on per age group. However, some teams may consist of just two students due to the need for rounding, while solo students will be paired up with students from a different country and/or state in their same division. Solo teams will not be permitted.
In 2025, there will be four separate versions of the Battery Exam. For younger age divisions, the questions will primarily deal with direct knowledge of topics in history (i.e. shorter questions focusing more on specific facts). The Varsity and Junior Varsity Divisions will consist of questions that primarily deal with applied knowledge of topics in history and historical analysis (somewhat similar to Advanced Placement exam questions). For the Varsity and Junior Varsity Division Battery Exam, direct knowledge of historical topics will still be important, but for most questions, greater insight than just recalling facts in and of themselves will be required. For example, “Which Mongol conqueror was born with the name Temujin?” would be a more appropriate question in most cases for the younger age divisions. “Which of these was a consequence of the period in history referred to as the Pax Mongolica?” would be an appropriate Varsity and Junior Varsity Division question. Note that question difficulty on all versions of the exam will vary widely within the questions; these sample questions are not meant to reflect the difficulty of all or most questions on the Exam (and of course, on the actual exam, four possible answer choices will be provided too).
The four versions of the Battery for the Olympiad are summarized as follows:
1. Varsity and Junior Varsity Divisions (same version) – 400 questions, more analysis required to answer the questions, highest overall difficulty level
2. Middle School Division – 400 questions, somewhat easier and less analysis required than for the Varsity and Junior Varsity exam version
3. Intermediate Division – 300 questions, significantly easier than the Middle School exam version
4. Elementary School Division – 250 questions, slightly easier than the Elementary School Division exam version
2025 International History Olympiad Battery Exam Question Distribution Specifications (Varsity, Junior Varsity, and Middle School Divisions – Updated June 11
(Younger age divisions will have proportionally fewer questions across each element of the distribution)
Part 1 – Europe (100 questions)
50 – Europe (until 1648)
50 – Europe (since 1648)
Part 2 – Americas and Oceania (100 questions)
40 – USA (including colonial period)
40 – Other Americas (Canada, Latin America, Caribbean)
20 – Australia / New Zealand / Oceania
Part 3 – Middle East and Africa (100 questions)
30 – Middle East (including ancient) / Central Asia
50 – Africa (including Ancient Egypt, Carthage, etc.)
20 – Miscellaneous
Part 4 – Asia (100 questions)
35 China
35 South Asia (India, Pakistan, Nepal, Bangladesh, Sri Lanka, Bhutan)
30 East Asia / Southeast Asia
Speed is of the essence; students have roughly 20-25 seconds per question; the Varsity, Junior Varsity, and Middle School Division Battery Exams will last 130 minutes, the Intermediate Division Battery Exam will last 120 minutes, and the Elementary School Division Battery Exam will last 110 minutes. There will be one bathroom break in the middle of the exam; the second part of the exam will only be distributed after this, and students will not be able to go back and fix answers from the first part of the exam after the first part is over.