Regeneron International Science and Engineering Fair (ISEF)
Rated Expert, this international pre-college science and engineering fair is not open through direct public entry. Students in Years 9–12 or equivalent must first qualify through an affiliated fair that can nominate supported projects. The main challenge is completing rigorous original research, documenting methods and evidence, and defending the project clearly before specialist judges.
Verified information
Competition details can change. Always confirm dates, eligibility and entry requirements on the official organiser's website.
Official website ↗OVERALL COMPETITION LEVEL
Expert Level
6 evaluation dimensions have source-backed automatic scores; 0 dimensions need conflict review.
Competition overview
Key information
Eligible ages
14–18
School level
Pre-college students selected via affiliated science fairs
Registration method
School Only
Competition stages
Qualification through affiliated fairs, finalist invitation, international judging and awards
Fee
Not yet announced by the organiser
Online / in-person
In-person
Dates
Competition timeline
Registration opens
Not yet announced by the organiser
Registration closes
Not yet announced by the organiser
Competition starts
9 May 2026
Competition ends
15 May 2026
Editorial perspective
Our Take
To compete at ISEF, a 9th-12th grade student must first win the honor through participation at a Society-affiliated fair. Each affiliated fair has a designated number of projects (individual or team) that they may support to come to ISEF. Ireland affiliated fair: Stripe Young Scientist & Technology Exhibition,SciFest