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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 science fair project explores whether musicians are better than non-musicians at distinguishing and understanding speech in noisy environments
High School
Ninth Grade
This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.
High School
Elementary School
This high school science fair project investigates if small changes in your diet alter the pH of your saliva.
High School
Life Science
Is temperature a requirement for solar energy uses? This project tests this theory and examines the amount of usable sunlight for solar-energy applications.
High School
Middle School
In this science fair experiment, high school students determine if all proteins denature at the same temperature.
High School
Ninth Grade
The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.
High School
Middle School
Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.
Seventh Grade
Eighth Grade
Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.
Sixth Grade
Seventh Grade
This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.
High School
Ninth Grade
This science fair project examines the different composition of fungi and plants.
High School
Ninth Grade
Science fair project that designs a video game that requires players to use relevant skills.
High School
Middle School
This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.
High School
Ninth Grade

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