Regeneron ISEF 2026 vs Summer at Simons
Comparing two elite STEM opportunities. Regeneron ISEF 2026 is a competition while Summer at Simons is a internship.
| Regeneron ISEF 2026 | Summer at Simons | |
|---|---|---|
| Prestige Tier | Tier 1 — Elite | Tier 2 — Highly Competitive |
| Type | Competition | Internship |
| Organization | Regeneron | Simons Foundation |
| 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. | Not publicly disclosed, but estimated at 5-15% given high prestige and limited spots per center (~3-10 positions per center per summer) |
| Applicants | Millions of students compete in science fairs globally each year; approximately 1,700–1,800 reach ISEF as finalists | Likely 200-500+ total applications across all centers annually, though not confirmed |
| Deadline | — | Rolling |
| Cost to Apply | Free | Free |
| US Only | No / International | No / International |
| Grades | Grades 9–12 (high school students only; middle schoolers compete in the separate Junior Innovators Challenge) | Undergraduate students and graduate/post-doctoral students only - high school students are NOT eligible |
| 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... | Summer at Simons is viewed VERY POSITIVELY by graduate admissions committees and prestigious employers. Impact includes: 1) STRONG indicator of research capability and commitment to academic career - ... |