Updated November 7, 2023

GENERAL RULES
No outside materials (notes, calculators, etc) are permitted in any event unless specifically stated in the event rules. Participants may not bring cell phones into any event room.

EVENT-BY-EVENT CHECKLIST
We've put all the information you need for each ESO at JHS event in one place. Download our 2024 Event Checklist with Rule Clarifications (PDF, Version 1), complete with the number participants permitted, required and optional materials, and event rule clarifications, event times, and room locations.

Returning teams, please note new rule clarifications for How Do You Spell Science? in which the morning round will differ from previous Olympiads.

Write It, Do It will now take place over a two-hour period with writers working in the first hour and doers working in the second hour. Writers may leave for another event in the second hour. Doers may compete in another event during the first hour before arrival.