How to Start a Science Fair Project That Qualifies for ISEF
Published · Guide · Subject: Science Research
The students who reach Regeneron ISEF almost all started earlier than they expected they would need to. A project that earns a spot at ISEF has typically been in development for a full academic year, sometimes two. This guide is for students who want to do serious science fair research and understand what serious means in practice — not as a warning, but as a map.
Start with the question, not the project
The most common mistake in science fair research is starting with a procedure: “I want to test whether plants grow better with different types of music.” The strongest projects start with a genuine question: something you actually want to know the answer to, in an area where you have enough background to design a meaningful test.
A useful exercise: read the abstracts of recent ISEF projects on the Society for Science website. Look at what the questions actually are. They tend to be narrow, specific, and genuinely uncertain — not “does X affect Y?” in a context where the answer is already known, but “what is the mechanism by which X affects Y in this specific context?” or “does this approach that worked for Y also work for Z?”
If you cannot find a gap in the existing knowledge that your project would address, you do not yet have a research question. You have a science demonstration.
Read the literature before designing your study
Before committing to a methodology, do a literature review. This does not require access to paid academic databases — PubMed (for biomedical topics) and Google Scholar are both free and comprehensive for starting a review. You are looking for two things: what has already been studied, and what the open questions are.
Reading two or three recent papers related to your topic will improve your methodology. It will help you understand what controls are standard in your area, what instrumentation is typically used, and what the common confounds are that a good study should address. It will also help you write a much stronger background section when it comes time to prepare your project materials.
Understand the ethical review requirements before starting
ISEF has mandatory pre-approval requirements for certain types of research. These are not optional and cannot be completed retroactively — if you collect data before completing the required forms, your project may be disqualified from your affiliated fair and from ISEF itself.
Projects requiring pre-approval include:
- Human subjects research: Any study involving data collected from other people — surveys, behavioral observations, interviews, physiological measurements. Requires Institutional Review Board (IRB) approval or a qualified scientist sponsor and completed Form 4 (Human Participants).
- Vertebrate animal research: Any study involving vertebrate animals (including fish, amphibians, and domestic animals). Requires IACUC approval and a qualified scientist sponsor. Many school settings cannot legally support this type of research.
- Potentially hazardous biological agents: Bacteria, viruses, fungi, rDNA, human or animal tissue. Requires Institutional Biosafety Committee (IBC) approval. BSL2 and above agents require a BSL2-certified facility, which essentially means university or professional lab access.
- Hazardous chemicals or devices: Review the ISEF rules for the specific substances and equipment involved in your project.
Download the current ISEF rules from the Society for Science website and read the relevant sections before you design your study. This is the single step that most student researchers skip and most regret.
Finding a mentor
A mentor is not required for all ISEF projects, but most projects that reach the top levels of competition have one. A good mentor is a scientist or engineer who works in an area related to your research question and can help you design a rigorous methodology.
Finding a mentor takes longer than most students expect. Cold emails to university professors go unanswered most of the time. The most reliable approach is warm contact through someone who knows the researcher: a teacher who has a professional network, a parent who works in a related field, a school counselor with connections to the local research community.
When you do reach a potential mentor, be specific about what you are asking: a brief meeting to discuss your research question, not an open-ended commitment to supervise your project. Most researchers who would say no to a vague request will say yes to a specific, bounded one.
Timeline for a competitive project
For a student who wants to compete at the affiliated regional fair in January or February:
- April–June: Identify your research question, do initial literature review, identify potential mentors.
- July–August: Complete required ethical review forms. Begin designing methodology with mentor input. Do not start collecting data until all required approvals are in place.
- September–November: Collect data.
- November–December: Analyze results, write up findings, prepare display materials and abstract.
- January–February: Compete at affiliated regional fair.
Students who start in October for a January fair are starting too late. You will not have time to collect meaningful data, encounter unexpected results, and adapt your methodology — all of which are part of real scientific work.
What judges are actually looking for
ISEF judges are professional scientists. They evaluate projects on scientific method, creativity, thorough treatment of the problem, technical skill, and clarity of presentation. They are looking for evidence that the student understands the science, not just followed a procedure.
During the interview, judges ask questions like: Why did you choose this design rather than an alternative? What are the limitations of your methodology? What would you do differently if you had another year? What are the next steps? A student who can answer these questions fluently, with genuine understanding of their own work, is a strong competitor regardless of whether their results were positive or negative.
Negative results are not a death sentence for a project. A well-designed experiment that found no effect, and a student who understands why the null result is informative, can compete strongly.
About this guide: Meli Review publishes preparation guides for academic contests alongside its directory. For the full ISEF contest profile, see Regeneron ISEF: The Complete Guide. For the broader research competition landscape, see the high school research competitions directory.