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High School Science Fair Projects

Need a science fair project that's fun, engaging, and appropriately rigorous for a high school science fair? Education.com has assembled a rich collection of high school science fair projects and high school science fair project ideas written by our team of professional scientists, science teachers, and educational consultants. We offer free high school science experiments on every science fair topic, including physics, chemistry, biology, engineering, and even psychology. Check the boxes in the sidebar to filter your results, or use the search bar to find a winning idea for your upcoming science fair. Hundreds of good science fair projects are only a click away.

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This experiment will explore if and where fractals can be found in the natural world.
High School
Botany
Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.
High School
Middle School
This experiment investigates whether the Ranschburg Effect is observed more frequently in older or younger adults.
High School
Ninth Grade
Science fair project that explains and demonstrates the parallax principle.
High School
Middle School
Science fair project that examines search engine optimization, internet search trends using a statistical study of searched keywords.
High School
Medium
This experiment investigates whether the primacy effect is observed more frequently in specific populations of people.
High School
Ninth Grade
This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.
High School
Elementary School
This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.
High School
Middle School
This experiment will examine and precisely measure the amount of sugar in various sodas.
High School
Physics

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