

Oregon's science fairs run through the Northwest Science Expo System (NWSE), a network of regional expos that feed into the state-level Northwest Science Expo, Oregon's ISEF-affiliated fair. Whether you're competing at a regional event like the Beaverton-Hillsboro STEM Expo or the Central Western Oregon Science Expo, or aiming for the state showcase, the path to winning is the same: a strong, original project, rigorously researched and clearly presented.
Winning can open doors to scholarships, internships, and national-level competition like the Regeneron International Science and Engineering Fair (ISEF). But the stakes bring fierce competition, projects are judged on originality, scientific thought, thoroughness, skill, and clarity, so standing out takes careful planning, execution, and presentation. This guide walks you through each step.
Oregon's Regional Science Expos (NWSE System)
Find your regional expo based on your county or school district, then advance to the state Northwest Science Expo.
Regional expo | Location | 2026 competition dates | Entry deadline | Territory |
|---|---|---|---|---|
Gresham | Mar 6, 2026 | Feb 10, 2026 | Parts of Oregon not covered by another regional fair | |
Beaverton | Feb 24 – Mar 3, 2026 | Feb 9, 2026 | Washington County | |
Portland | Feb 20 – 25, 2026 | Jan 23, 2026 | Oregon Episcopal School (Washington County) | |
Wilsonville | Mar 11 – 12, 2026 | Feb 1, 2026 | West Linn–Wilsonville School District | |
Salem | Mar 7, 2026 | Feb 13, 2026 | Tillamook, Benton, Polk, Yamhill, Linn, Marion, Lane counties | |
Bend | Mar 10, 2026 | Feb 13, 2026 | Central & Eastern Oregon (Deschutes, Crook, Wasco, Umatilla, and more) | |
Tualatin | Mar 27 – Apr 6, 2026 | Mar 13, 2026 | Statewide |
Step 1: Choose the Right Topic
Your topic lays the foundation for everything that follows, so choose one that both genuinely interests you and impresses the judges.
Go interdisciplinary.
One of the most effective ways to stand out is to combine fields rather than staying inside one. If you love biology, for instance, you might fold in data science to analyze trends in biological data, studying pollution's impact on local wildlife by collecting data over time and using machine learning to predict future effects. An approach like that shows both critical thinking and versatility.
If you need help landing on a strong idea, our guide to coming up with a science fair project idea walks through how to find one worth pursuing.
Leverage local resources
Oregon is rich in scientific institutions that can give your project an edge. Reach out to universities like Oregon State or the University of Oregon for specialized equipment, data, or mentorship, or collaborate with organizations like the Oregon Museum of Science and Industry (OMSI). For an environmental project, partnering with a local conservation group can supply real-world data and insights that add credibility and depth.
Tackle Oregon-specific issues
Judges appreciate projects relevant to the local community. Focusing on challenges specific to Oregon, like wildfire management, sustainable logging, or the impact of invasive species on agriculture, makes your work more impactful and relatable. You might explore the effectiveness of different wildfire-prevention techniques in Oregon's unique forest ecosystems, showing both awareness of local issues and a commitment to solving real problems.
Step 2: Conduct Thorough Research
Once you've chosen your topic, dive into the research that anchors your findings and conclusions.
Develop a strong research question and hypothesis
Your research question is the backbone of your project, so aim for something specific and novel rather than broad. Instead of asking how pollution affects water quality, narrow it to something like: "How does microplastic pollution in the Willamette River impact the reproductive rates of native fish species?" A precise question makes your project's significance immediately clear.
Use advanced research techniques
To truly impress, go beyond standard methods. Depending on your resources and expertise, that might mean GIS for spatial analysis, machine learning for prediction, or CRISPR for genetic experiments. A project tracking an invasive species, for example, could use GIS to map its spread over time, turning the problem into a visual, data-driven analysis. Techniques like these add depth and show real proficiency with cutting-edge tools.
Step 3: Execute Your Project
With your plan in place, execution is where experiments happen, data gets collected, and findings take shape.
Be meticulous with data
Accurate collection and analysis are critical. Make your data reliable and repeatable by running multiple trials and using controls where needed, and document your process carefully, since judges look for evidence that your experiment was systematic and your conclusions grounded in solid data. Once it's collected, analyze it with appropriate statistical methods, and use graphs, charts, and infographics to make your results accessible and impactful.
Build in feedback loops
Stay flexible as new information comes in. If an experiment doesn't go as planned, don't be afraid to adjust, and reassess your progress regularly. If your initial hypothesis isn't supported by the data, refine it or explore a related question. This iterative process strengthens your project and demonstrates your ability to think critically and adapt.
Step 4: Craft a Compelling Presentation
Your presentation is where you convince the judges your project deserves to win.
Maximize visual impact
Your poster and visuals should be both informative and engaging, with high-quality images, readable color schemes, and concise text. Interactive elements like models, live demonstrations, or even augmented reality make a presentation more dynamic. If your project involves an engineering design, a 3D model or working prototype is far more compelling than static images.
Craft a strong narrative
Science is about more than data; it's about telling a story. Weave your research, findings, and conclusions into a coherent arc: set the stage with a real-world problem, introduce your research as the solution, and close with the broader implications. A narrative approach makes your project memorable and helps judges grasp why it matters.
Prepare for the Q&A like a pro
The question-and-answer session can make or break your chances, so preparation is everything. Anticipate likely questions and rehearse your responses, ready to discuss your methodology, the implications of your findings, and the challenges you overcame.
Beyond Oregon: Other Fairs and Competitions
Doing well in the NWSE system can be a springboard to bigger stages. If you're curious about where a strong project can take you, our roundup of the top science competitions for high school students maps out the national and international options, from ISEF to the Google Science Fair. And if you're comparing how different states run their fairs, our guides to winning the Virginia, New York, and Southern Arizona (SARSEF) fairs are all worth a read.
Equip Yourself to Win With ScienceFair
Winning in the Northwest Science Expo System takes flawless execution from start to finish, and that's exactly what ScienceFair helps you build. Our mentors have competed in and won the top STEM competitions, including ISEF, JSHS, and the Thermo Fisher JIC, and they offer personalized, one-on-one guidance whether you need help choosing a topic, refining your research plan, or polishing your presentation. That kind of expert feedback is often the difference between a good project and a winning one.
Ready to make your run at the Oregon Science Fair? Schedule a call with our academic advisor.
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