The Olympiad is organized in the respective schools of the participants during the school hours. The structure of the event (iTHO) stands as the following:An objective-type test of 60 minutes duration, comprising 40 Multiple Choice Questions (MCQs) for classes I and II; and 50 MCQs for the classes III to X. The question paper is class specific and usually consists of three sections:
(i) Section-1: Science
(ii) Section-2: Mathematics
(iii) Section-3: Reasoning and AptitudeThe medium of the test is English/Gujarati only.
The iTHO is conducted on two dates. Each school may select a date for conducting the Olympiad as per its convenience. Each date of the Olympiad has a separate set of question papers.