PROMYS vs Regeneron ISEF 2026
Comparing two highly competitive STEM opportunities. PROMYS is a summer program while Regeneron ISEF 2026 is a competition.
| PROMYS | Regeneron ISEF 2026 | |
|---|---|---|
| Prestige Tier | Tier 2 — Highly Competitive | Tier 1 — Elite |
| Type | Summer Program | Competition |
| Organization | Boston University | Regeneron |
| Acceptance Rate | Approximately 15-20% (estimated based on ~80 admitted from several hundred applicants; exact figures not publicly disclosed) | 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 | Several hundred annually (exact number not publicly available) | Millions of students compete in science fairs globally each year; approximately 1,700–1,800 reach ISEF as finalists |
| Deadline | — | — |
| Cost to Apply | $0 | Free |
| US Only | No / International | No / International |
| Grades | High school students entering grades 9-12 | Grades 9–12 (high school students only; middle schoolers compete in the separate Junior Innovators Challenge) |
| College Impact | PROMYS attendance is viewed very favorably by college admissions officers, particularly at selective institutions. It demonstrates: genuine passion for mathematics, intellectual rigor, ability to succ... | 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... |