Every year, over 1,800 of the brightest students from 80+ countries gather at the Regeneron ISEF, the world’s most prestigious science fair — and only a few walk away as winners.

If you’ve ever wondered how students win ISEF, here’s the truth: It’s not just about a cool idea. It’s about crafting a publishable research paper, a clear innovation story, and showing world-class execution — with the right mentors by your side.

This guide breaks down exactly how to win ISEF in 2025, based on what we've learned helping students publish in top journals and reach the ISEF international stage through YRI.

Step 1 — Build a Compelling Story

The single biggest factor judges care about? Your narrative.

Winning ISEF projects tell a story — they don’t just show results.

What makes a winning story

• A problem that matters — climate change, cancer diagnostics, clean energy, AI ethics, food security
• A creative solution — an algorithm, material, or technique no one’s tried in that way
• A clear real-world impact — how it could change lives if scaled

Brainstorming tips

• Browse past finalists and winners: ISEF Project Database
• Review winning projects from Regeneron ISEF
• Explore research from Junior Science and Humanities Symposium (JSHS)
• Start from a pain point you’ve seen in your community
• Combine two fields (AI + medicine, biotech + climate)

YRI Fellows have done projects like predicting heart failure with deep learning, designing carbon-capturing materials, and building low-cost genetic diagnostics. YRI helps students design competition-winning projects.

Step 2 — Find the Right Mentor

Almost every top ISEF project has PhD-level mentorship behind it. Judges can instantly tell when a project is backed by advanced expertise.

What a mentor does

• Guides your research design and methods
• Gives access to lab resources or datasets
• Reviews your paper and poster
• Helps you aim for publication in peer-reviewed journals

How to get a mentor

• Email professors at local universities (department pages list research areas)
• Connect on LinkedIn (here's Ishan's profile)
• Apply to YRI — matched 1:1 with top-tier PhD mentors. YRI provides expert mentorship for ISEF preparation.

Step 3 — Execute Like a Scientist

ISEF judges are scientists. Treat your work like real science.

What judges look for

• Original idea and innovation
• Rigor in data collection and analysis
• Reproducibility and clear methodology
• Ethical conduct
• Visual clarity in your poster

Deliverables you must have

• A full research paper (5,000–10,000 words)
• A clean poster presentation
• A logbook and dataset documenting your process

YRI students spend ~10 weeks building publication-ready papers while documenting every step — making their ISEF applications bulletproof.

Step 4 — Master the Presentation

Even brilliant projects lose if you can’t explain them clearly.

How to stand out to judges

• Practice a tight 2-minute pitch
• Prepare answers to technical questions
• Show confidence, passion, and ownership
• Use precise language without heavy jargon

Pro tip: Record yourself and critique clarity, pacing, and posture. YRI Fellows do mock judging rounds before competition week.

Step 5 — Build Early Credibility with Publications

Publishing your research before ISEF gives you massive credibility.

• Judges see it as proof your work passed expert review
• It makes your project stand out from 1,800+ competitors
• It helps with college admissions and scholarships

YRI guides students to journals and conferences appropriate for high-school research and helps with submission formatting and revisions. YRI provides comprehensive publication support.

Step 6 — Plan Your Timeline (Backwards)

Here’s a practical ISEF prep timeline:

Most YRI Fellows start 6–12 months before ISEF and many place as semifinalists or finalists in their first attempt.

YRI Student Success: Avyay G. — 1st Place Science Fair Winner

Avyay G. joined the YRI Fellowship as a 9th grader with curiosity about environmental health but no research experience. Working with his PhD mentor, he developed an AI-powered model integrating air pollution data with genetic susceptibility to predict respiratory disease risk.

His research combined environmental epidemiology with machine learning, demonstrating that high school students can conduct meaningful public health research with proper mentorship.

The result? Avyay won 1st place at his regional science fair and qualified for state competition — remarkable achievements for a 9th grader's first research project.

"YRI helped me integrate air pollution data with genetic susceptibility to build AI models predicting respiratory disease risk. My research won 1st place at my science fair—something I never imagined achieving in 9th grade." — Avyay G., 1st Place Science Fair Winner

Read Avyay's full case study →

Step 7 — Build a Personal Brand Around Your Project

ISEF winners often get media coverage.

• Post updates on LinkedIn
• Create a simple portfolio site with your paper and press
• Get featured by your school newsletter or local media

This boosts credibility for college apps, scholarships, and internships.

The ISEF Success Formula (Recap)

1. Compelling problem & narrative
2. PhD-level mentorship
3. Rigorous execution & documentation
4. Polished presentation
5. Publication + early credibility

Apply to the YRI Fellowship

If your dream is to win Regeneron ISEF, the clearest path is to work with people who’ve already done it.

At YRI you'll:

• Get matched 1:1 with PhD mentors
• Design and execute a competition-ready project
• Write a publication-grade paper
• Prepare for judging with mock rounds and poster coaching

YRI has helped students reach ISEF and win awards. Learn more about YRI's ISEF preparation program and start your journey to the ISEF stage. For more science fair strategies, see how to win science fairs and how to publish research papers. Also check out how to win JSHS and how to do research in high school.

Frequently Asked Questions

How long does ISEF preparation take?
Typically 6–12 months, depending on project complexity. Most successful students start planning 8-12 months before the competition. This allows time for research, experimentation, publication, and regional fair qualification.

Can I do ISEF without school lab access?
Yes — you can use public datasets, cloud compute, or community labs. Many winning ISEF projects use computational methods, public health data, or simulations that don't require physical lab equipment. YRI helps students design projects that work with available resources.

Do I need prior research experience to win ISEF?
No — YRI specializes in taking students from zero to published and competition-ready. Many ISEF finalists start with no research experience but achieve success through structured mentorship and guidance.

Will winning ISEF help with college admissions?
Absolutely — ISEF medals and publications are among the strongest academic credentials for selective colleges. ISEF recognition demonstrates originality, intellectual maturity, and the ability to contribute to knowledge—qualities top universities value highly.

What makes an ISEF-winning project?
Winning projects solve real problems, use rigorous methodology, tell a compelling story, and often achieve publication. They demonstrate clear innovation and real-world impact. Most winners have PhD-level mentorship guiding their research design and execution.

How do I qualify for ISEF?
You must first win at a regional or state science fair that's an ISEF-affiliated fair. Each region has different qualification requirements. YRI helps students prepare for both regional fairs and the ISEF international competition.

Written by Ishan Jain, Founder of the YRI Fellowship