Regeneron ISEF 2026

Grades: Grades 9–12 (high school students only; middle schoolers compete in the separate Junior Innovators Challenge)

Age: Typically 14–18 years old; students must not have previously competed at ISEF in the same project

Citizenship: Open internationally — students from 60+ countries, regions, and territories compete. No citizenship requirement, but students must qualify through an affiliated fair in their region

Prerequisites: Must first WIN at a Society-affiliated local, regional, state, or national science fair to earn a slot to ISEF. There is no direct application to ISEF itself.

Projects can be individual or team-based (up to 3 members). Each affiliated fair allocates a limited number of spots to send to ISEF. Students must comply with all ISEF Scientific Review Committee (SRC) rules, especially for regulated research involving humans, vertebrate animals, pathogens, or recombinant DNA.

1. Step 1 — Find your local/regional affiliated science fair: Use the Society for Science's affiliated fair directory to locate fairs near you. There are 365 affiliated fairs worldwide.
2. Step 2 — Register for and compete at your affiliated fair: Submit a project to your regional fair, typically held January–April. You must win a top award/qualifying slot at that fair.
3. Step 3 — Complete ISEF required forms BEFORE starting research: Fill out all required SRC (Scientific Review Committee) forms relevant to your project type (e.g., human subjects, vertebrate animals, hazardous materials). These must be approved BEFORE experimentation begins.
4. Step 4 — Conduct your research and document in a logbook: Maintain a detailed, dated logbook of all experimental steps. Write a formal research paper (~5,000–10,000 words recommended).
5. Step 5 — Win at your affiliated fair and receive ISEF nomination: Your affiliated fair director submits your project to Society for Science for ISEF participation.
6. Step 6 — Complete ISEF finalist registration: Once nominated, complete online finalist registration, submit your abstract, and arrange travel to the ISEF host city.
7. Step 7 — Prepare poster and presentation: Build your display board following ISEF Project Material Guidelines. Practice oral presentation for judging sessions.
8. Step 8 — Compete at ISEF (typically held in May): Set up display, undergo multiple rounds of judging (Grand Award judges + Special Award Organization judges), attend awards ceremonies.

Materials: Completed SRC (Scientific Review Committee) approval forms (project-specific), Detailed research logbook/lab notebook documenting all work, Formal research paper / written report, Project display board (within ISEF size guidelines: max 122 cm wide x 274 cm tall x 76 cm deep), Abstract (250 words max) submitted through the official portal, Any required human subjects / IRB approval documentation, Endorsement/signature from a qualified adult sponsor (teacher or mentor), Travel arrangements to ISEF host city (Society provides some financial assistance to finalists)

Timeline: Start in summer (July–August) to choose topic and find mentor. Conduct research September–December. Compete at local/regional affiliated fair January–March. If selected, attend ISEF in May. The 2026 ISEF was held May 9–15 in Phoenix, AZ. ISEF 2027 location/dates not yet announced as of mid-2026. Start preparing at minimum 8–12 months before your regional fair.

Cost: No cost to compete at ISEF itself — the Society for Science covers registration. However, students are responsible for travel/lodging costs (some financial aid available). Regional affiliated fair entry fees vary by fair.

What judges look for:

• Creative ability and originality — Is the research question novel? Does it fill a gap in existing literature?
• Scientific thought and rigor — Is the methodology sound, variables controlled, data collection reliable?
• Thoroughness — Has the student explored the topic deeply, considered limitations, and done extensive background research?
• Skill in carrying out the research — Technical competence in executing experiments or computational work
• Clarity of expression — Can the student explain their work clearly to non-experts AND to domain experts?
• Real-world impact and relevance — Does the project address a meaningful problem (health, environment, AI, energy, etc.)?
• Innovation — Projects combining two fields (e.g., AI + medicine, biotech + climate) tend to stand out
• Data analysis quality — Appropriate statistical tools, well-labeled graphs and tables, sound interpretation
• Presentation polish — Clear, visually clean poster; confident, enthusiastic oral delivery
• Ownership of the work — Judges probe deeply; students must demonstrate personal mastery of every aspect

Scoring: Grand Award judges evaluate projects across: Creative Ability, Scientific Thought, Thoroughness, Skill, and Clarity. Each category carries weighted scoring. Projects are judged within their specific category (out of 22 categories). Top scorers in each category earn 1st–4th Grand Awards. From 1st-place category winners, top awards (Yancopoulos, Young Scientist, Moore Award, etc.) are selected by a separate panel.

Common mistakes:

• Starting too late — rushing the research or skipping required SRC forms, which can disqualify a project
• Choosing an overused or 'safe' topic without a novel angle (e.g., generic plant growth or baking soda volcano)
• Weak or vague hypothesis — not having a specific, testable research question
• Lack of controls or insufficient sample size — methodological flaws judges immediately spot
• Not reading the primary literature — judges expect awareness of recent published research in the field
• Over-reliance on a mentor doing the work — judges ask probing questions; students must own every detail
• Ignoring required regulatory paperwork (SRC forms for human subjects, animals, or hazardous materials) — can lead to disqualification
• Poor presentation/poster design — cluttered, text-heavy boards that obscure the key findings
• Inability to explain results in simple terms — failing the 'explain it to a non-expert' test
• No statistical analysis or inappropriate analysis for the data type

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.

Applicants: Millions of students compete in science fairs globally each year; approximately 1,700–1,800 reach ISEF as finalists

Winners/Selected: ~600 finalists receive awards of some kind. Category Grand Awards (1st–4th place) go to proportional numbers in each of 22 categories. Top Awards: 1 George D. Yancopoulos Innovator Award ($100,000), 2 Regeneron Young Scientist Awards ($75,000 each), plus several $10,000–$50,000 special top prizes. Special Award Organizations (45+ groups) give out hundreds of additional awards.

ISEF is widely considered the most competitive pre-college science competition in the world. The bottleneck is qualifying through affiliated fairs — each regional fair typically sends only 2–6 projects to ISEF. Competition intensity varies by region; some states/countries have far more spots than others relative to their student population.

• Start early — begin topic selection and mentor outreach in summer, at least 10–12 months before ISEF. Most winners spend a full year on their project.
• Choose a genuinely novel topic that addresses a real-world problem. Interdisciplinary projects (AI + biology, materials science + sustainability) tend to perform exceptionally well.
• Secure a PhD-level research mentor. Almost every top ISEF project has expert mentorship. Email university professors, use LinkedIn, or apply to structured mentorship programs. Lab access through a university also strengthens the project.
• Aim for publication-grade research. Having your work published or accepted to a peer-reviewed journal before ISEF adds enormous credibility with judges.
• Complete ALL required SRC/regulatory forms before starting experiments — this is non-negotiable and can disqualify you if skipped.
• Maintain a detailed, dated logbook from day one. Judges value documentation of the entire research process, not just results.
• Develop a tight 2-minute 'elevator pitch' for your project and prepare answers for deep technical questions. Practice with mock judging sessions.
• Design your poster to be visual and scannable — use graphics, clear headers, and minimal dense text. A judge should understand your core contribution in 30 seconds.
• Show passion and genuine curiosity. Judges are scientists who can tell when a student truly owns their work vs. is reciting a script.
• Look through the ISEF Abstract Database (abstracts.societyforscience.org) to study past winning projects and understand what judges reward in your category.
• Don't be discouraged by imperfect results — judges value how you analyze and explain unexpected findings over picture-perfect outcomes.
• Consider entering Special Award categories strategically — organizations like NASA, IEEE, NIH, and USAID give substantial awards aligned with specific project topics.
• Watch the National Geographic docuseries 'Science Fair: The Series' (available on Disney+/Hulu) for an inside look at what ISEF actually looks like.
• Network at ISEF — connections made with other finalists, judges, and scientists can open doors for internships, research opportunities, and college recommendations.

• Browse the ISEF Abstract Database to study winning projects in your area of interest
• Choose a topic you are deeply passionate about and identify a specific gap in current research
• Reach out to university professors or researchers for mentorship via cold email or LinkedIn
• Read primary literature (journal articles, not just Wikipedia) in your chosen field
• Complete all required SRC paperwork BEFORE beginning any experiments
• Build your research skills: learn basic statistics, data visualization, and scientific writing
• Compete at smaller local fairs first to get feedback and experience before your qualifying regional fair
• Practice presenting to non-experts (family) AND domain experts (teachers, mentors)
• Study poster design principles — look at award-winning ISEF posters for layout inspiration
• Consider targeted mentorship programs (ScienceFair.io, YRI Fellowship, or similar)

Resources:

• ISEF Abstract Database: abstracts.societyforscience.org — searchable database of all projects 2014–2026
• Society for Science official rules and guidelines: societyforscience.org/isef/
• Science Fair: The Series (National Geographic / Disney+ / Hulu) — documentary following real ISEF finalists
• Rishab Jain's YouTube channel and rishabacademy.com — guides from a past ISEF Grand Prize winner
• ScienceFair.io — A-Z mentorship program and guides from ISEF winners
• YRI (Young Researchers Institute) Fellowship — structured mentorship matching students with PhD mentors
• Google Scholar / PubMed — for finding primary research literature in your topic area
• Statistics resources: Khan Academy Statistics, or 'Statistics for the Life Sciences' textbook
• Poster Smith (postersmith.com) — recommended by ISEF winners for printing competition posters

Time needed: Minimum 8–10 months of active preparation; ideally 12–18 months for a competitive project. Expect to spend significant time during summer break on research and experimentation, with continued work through the school year.

Top ISEF winners typically are juniors or seniors (10th–12th grade) who have been working on their project for 1–2 years. They tend to have PhD-level mentors and often work in university labs or use sophisticated computational tools. Winning projects frequently address high-impact problems in biomedical science, AI/machine learning, environmental engineering, or physics. Recent top award winners have tackled projects like AI-powered disease diagnostics, novel cancer detection methods, clean energy materials, and climate modeling. Many finalists have prior science fair experience (having placed well at regional fairs before). International winners are common — the competition is truly global, with strong representation from China, India, Israel, Brazil, and Europe alongside the US.

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 Award winners (especially 1st place category winners and top prize recipients) are extraordinarily rare and represent some of the strongest academic profiles in any applicant pool. Top universities like MIT, Caltech, Harvard, Stanford, and the Ivy League view ISEF recognition as a signal of genuine intellectual contribution and research potential — qualities that distinguish applicants beyond test scores and GPA. Many ISEF alumni receive full scholarships, invitations to exclusive programs (like the EU Contest for Young Scientists or Stockholm International Youth Science Seminar), and direct mentorship from leading scientists. Even students who compete at ISEF without winning top prizes benefit from the experience, the network, and the compelling story it provides for college essays.

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