Regeneron International Science and Engineering Fair (ISEF): 2025 IP Math & Physics Guide
30 Nov 2025, 00:00 Z
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Q: What does Regeneron International Science and Engineering Fair (ISEF): 2025 IP Math & Physics Guide cover?
A: What ISEF is, how finalists qualify via affiliated fairs (including Singapore’s SSEF), and where to find official rules, awards, and judging criteria.
TL;DR
Regeneron ISEF is described by Regeneron as the world’s largest high school STEM competition, and Society for Science states finalists compete across 22 categories for nearly US$9 million in awards, prizes, and scholarships.
You can’t register directly: competing starts at a Society-affiliated fair (in Singapore, SSEF is affiliated to ISEF and selected winners represent Singapore at ISEF).
This guide points you to the official rules, awards, and judging criteria so IP projects can scale towards ISEF standards.
Status: Key official pages checked 2026-01-26; re-check the SSEF “current run” link for the latest Singapore dates.
Quick links: IP Physics hub, IP Maths hub, NUS–MOE SRP playbook, YDSP guide
Registration quick answer (global): Competing at Regeneron ISEF starts at a Society-affiliated fair; students generally qualify through their affiliated fair instead of registering directly.
Build Your Research Pipeline
If you are pushing towards SSEF or ISEF, pair this guide with our NUS–MOE Science Research Programme playbook so lab logs, mentor outreach, and presentation artefacts scale directly into competition entries.
1 What exactly is ISEF?
Regeneron International Science and Engineering Fair (ISEF) is a Society for Science programme sponsored by Regeneron. Regeneron describes it as the world’s largest high school STEM competition, while Society for Science publishes the official host-city details and international rules for each year (for example, Regeneron ISEF 2026 event week is listed as May 9–15, 2026 in Phoenix, Arizona).
2 Who gets to compete?
Society for Science states that to compete at ISEF, a student must first win the honour through participation at a Society-affiliated fair, and each affiliated fair has a designated number of projects (individual or team) that it may support to come to ISEF.
For Singapore specifically, Science Centre Singapore states that the Singapore Science & Engineering Fair (SSEF) is affiliated to ISEF, and selected SSEF winners represent Singapore at ISEF. Use the SSEF page’s “current run” link for the latest participation details and timelines.
