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