Indian Talent Olympiad Science Olympiad (ISO) Class 6: syllabus, dates and exam pattern (2026–27)

The three Set dates are the school route — the school picks one set and the child sits the paper with the class. The two slot dates are the individual online route a family can take without the school, and they are different dates, not alternatives to the same sitting. Indian Talent Olympiad publishes the online dates as tentative, stating that "the final exam schedule will be updated 20 days prior". Once a set or slot is selected it cannot be changed.

Registration: Through the school there are three published cutoffs, and which one applies depends on the date you read this: 10 September 2026 for Set A, which has passed, 10 October 2026 for Set B and 10 November 2026 for Set C. Set A moved twice before it closed, from 31 August to 5 September and then to 10 September. The school collects ₹175 per student per subject, remitting ₹150 to ITO and keeping ₹25 for organising costs. Directly, without the school, individual online registration for Classes 1 to 10 closes 30 October 2026 for slot 1, at ₹500 per subject — one of the direct routes we have confirmed across the bodies we cover, alongside CREST, Unified Council's NSTSE and Humming Bird. Those three cutoffs are the school route; the individual online date is a separate clock and does not extend any of them. Two things about that school deadline that ITO's schedule page does not say and its fee page does. First, it is a POSTAL deadline: the completed registration form, the student list and the fee as a demand draft have to reach Indian Talent Olympiad's Mumbai office by the cutoff, by registered post or courier, so the envelope has to leave the school several days before the cutoff rather than on it. Second, the two pages disagree — the fee page still instructs schools to send everything to arrive "on or before 31st August 2026 (Slot 1)", the date the body has since moved off twice, and it calls the three windows Slot 1, 2 and 3 where the schedule calls them Set A, B and C. The two pages agree on the later two windows — the fee page's Slot 2 (10 October 2026) and Slot 3 (10 November 2026) are the schedule page's Set B and Set C — so the disagreement is confined to the window that closed first. Both pages were read first-hand on 12 September 2026. Ring the body before your school posts a draft.