IESOInternationalScience
International Earth Science Olympiad (IESO)
Organised by IESO / GSI India teamOfficial Website ↗
World championship in Earth Sciences covering geology oceanography meteorology and astronomy. India sends 4 students after national selection by GSI.
Eligibility
School students — national selection
Fee
Nil
Reg. Opens
N/A–N/A
Exam Date
Aug 2026
Level
International
Pathway Stage
National Entry
About this olympiad
World championship in Earth Sciences covering geology oceanography meteorology and astronomy. India sends 4 students after national selection by GSI.
The pathway
Multi-stage national selection
How registration works
1
National selection by Geological Survey of India (GSI) with HBCSE
2
Check GSI website for selection schedule.
How to prepare
Understand the syllabus
Focus on the core concepts of the Science curriculum with a higher weightage on analytical problems.
Solve past papers
Practice with previous years' question papers to understand the exam pattern and marking scheme.
Notify Me
Get notified when IESO 2026 registration opens.
Quick Facts
TypeEarth Science Olympiad
International?Yes
Govt Recognized?Yes
Online Exam?No
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