
Overview
Humanity has been working diligently since the beginning of science to solve every mystery that has enveloped this universe. With technological advancements advancing at a breakneck speed, we must take a step back and ask ourselves, "What is our contribution to this?" Are we providing the tools necessary for the next generation to become the next great explorer or scientist?
The International Science Olympiad is specifically designed to accomplish this. The International Science Olympiad strives to identify raw talent among students in their earliest years. It's provides students with the opportunity to compete against the best on a global scale.
Objective
The exam is designed to assess students' knowledge of the subject not just theoretically but also practically. The main aim of the exam is to test the scientific temperament of each student as they tackle problems of increasing difficulty that challenge their knowledge at every step and force them to think beyond their textbook knowledge. Each question is intended to assess each student's inherent knowledge.

Preliminary Round
23 - 25 May 2025
Mode: Online - National Rank
Registration Fee: 690 Baht
Result Release 30 June 2025

Final Round
20 July 2025
Mode: Online - International Rank
Registration Fee: 950 Baht
Test Format
Einstein , Newton , Darwin, Faraday, Edison & Franklin (Grade- 1 to 12):
-
The exam duration is 90 minutes.
-
The first-round perfect scorer will appear in the Final round of competition.
-
In the final round of competition, the first-round perfect scorer will compete. Students who score higher than 95% in the final round will receive a Perfect Score Award, a Gold Medal, and $100 in cash.
-
For students in grades 1 to 4, there are 24 questions in total, with 8 questions per section with five options for each question.
-
For students in grades 5 to 12, there are 30 questions in total, with 10 questions per section with five options for each question.
-
Einstein -1 and Einstein -2 students will take the same test paper but will be ranked separately. Same applies for Newton -1 & 2; Darwin-1 & 2; Faraday - 1&2; Edison -1 & 2 and Franklin-1 & 2.
-
There are three levels of increasing difficulty in each of the three categories.
-
One mark will be deducted for each incorrect answer; there will be no penalty for skipping a question.
-
Based on the level of difficulty, the following points are awarded:
-
Section-A (Easy): 3 points for each correct answer.
-
Section-B (Medium): 4 points for each correct answer.
-
Section-C (Hard): 5 points for each correct answer.
-
Note: - During the exam, pencils, pens, erasers, rulers, and other geometrical instruments are allowed. Instruments or gadgets like calculators, smart watches, etc. are strictly prohibited.
-
Section-A (Easy): 3 points for each correct answer.
-
Section-B (Medium): 4 points for each correct answer.
-
Section-C (Hard): 5 points for each correct answer.
-
Note: - During the exam, pencils, pens, erasers, rulers, and other geometrical instruments are allowed. Instruments or gadgets like calculators, smart watches, etc. are strictly prohibited.
AWARD
Gold medals will be awarded to the top 5% of competitors; silver medals will be awarded to the next top 10% of competitors, and bronze medals will be awarded to the next top 10% of competitors. All medalists will be presented with digital certificates. Others will receive a participation or appreciation digital certificate.
Only digital certificate will be given for appreciation and participation.
In the final round of competition, the first-round perfect scorer and students who get 95% or more in preliminary round will compete. Students who score higher than 95% in the final round will receive a Perfect Score Award, a Gold Medal, and $100 in cash.

Past Paper 2023
Registration [ OPEN March1st, 2025 ]
-
690 Baht per student. Please register at https://phiportal.org
-
The registration deadline is 9 May 2025. No applications will be accepted after the deadline.
-
ISO prelim date 23-25 May 2025 ( you can choose any day)
-
The final round in 20 July 2025
Refund Policy
Refund is permissible if you cannot attend the competition on the scheduled date due to health condition, and the replacement date is not available. You must produce a valid medical certificate to request the refund of the participation fee.
Questions?
For more information about the competition, please email to contact@phiconnections.org

ISO 2025 First Round Results
International Rank
How to download International Certificate?
1. Visit the link: https://www.internationalolympiadacademy.com/iso-result.php
2. Enter Student Name (As mentioned in your admit card) and Candidate Number as mention in your Hall Ticket ***
You can find candidate no in the ISO ticket by search inbox folder as registered email or login at https://phiportal.org/ then click Document button to find "Ticket"
3. Click on the Search button
4. Click on Download Result and Download Certificate
Thailand National Rank
How to download National Certificate?
1. Sign in at https://exam.phiconnections.org
ou can find login detail in the ISO ticket by search inbox folder as registered email or login at https://phiportal.org/ then click Document button to find "Ticket"
2. On your profile page, find your latest competitions under the “History of Participation” table.
3. Click the “Review” icon next to the competition name.
4. In the competition card that opens, navigate to the “Certificate” and click the icon “Download”
ISO-Thailand-2025
Medal Winners
GOLD SILVER BRONZE AWARDS for medalist will be distributed on August - September 2025. Please fill up your address and award details by 20 July 2025
https://form.jotform.com/PhiCon/iso2025-medal-form
#ISO2025 - Thailand
ESB 2023
Preliminary Round
Results
AWARD MEDALS will be distributed on August 2023
Please fill up your address and award details by 30 June 2023
https://form.jotform.com/PhiCon/esb-2023-preliminary-round-awardsce
*** GOLD Awardees will be invited to the semi-final round by email
Certificate:
The certificates files are available for all participants to download on the website by the end of June 2023. You will find it in the Registered List block after login and https://phiportal.org
AWARD MEDALS (GOLD, SILVER, BRONZE):
The award medals will be distributed on August 2023
All awardees are required to fill up your address and award details by 30 June 2023. Please click the AWARD MEDAL FORM as below.















