WOOT (Worldwide Online Olympiad Training) vs Regeneron ISEF 2026

Comparing two highly competitive STEM opportunities. WOOT (Worldwide Online Olympiad Training) is a enrichment while Regeneron ISEF 2026 is a competition.

WOOT (Worldwide Online Olympiad Training) Regeneron ISEF 2026
Prestige Tier Tier 2 — Highly Competitive Tier 1 — Elite
Type Enrichment Competition
Organization Art of Problem Solving Regeneron
Acceptance Rate No formal acceptance rate published; program appears to have open enrollment for qualified students Roughly 1,700 finalists are selected from 365 affiliated fairs worldwide. Getting to ISEF requires first winning regionally, which itself is competitive. Estimated <1% of all science fair participants globally reach ISEF. At the ISEF itself, approximately 600 of the 1,700 finalists (~35%) receive some award.
Applicants Not publicly disclosed; AoPS serves over 1 million problem solvers globally Millions of students compete in science fairs globally each year; approximately 1,700–1,800 reach ISEF as finalists
Deadline Rolling
Cost to Apply $0 Free
US Only No / International No / International
Grades Grades 8-12 Grades 9–12 (high school students only; middle schoolers compete in the separate Junior Innovators Challenge)
College Impact WOOT and olympiad participation are viewed very favorably in college admissions to top-tier universities: MIT Admissions explicitly mentions that mathematically inclined students find AoPS an 'indispe... ISEF finalist status is one of the most powerful extracurricular credentials in college admissions. Being named an ISEF finalist (simply qualifying) is Tier 1 on most admissions frameworks. Grand Awar...