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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 idea teaches about the size of two different systems: the solar system and an atomic system.
High School
Middle School
What happens when 'coffee-addicts' miss coffee for 1 day? Find out in this science fair project idea!
Sixth Grade
Seventh Grade
This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.
High School
Middle School
Science fair project in which you will graft branches from different fruit tree onto a root stalk.
Eighth Grade
Ninth Grade
In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.
High School
Middle School
Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.
Seventh Grade
Eighth Grade
This science fair project idea examines if there is a reason that musical notes are at the pitches they are.
High School
Middle School
Science fair project which determines whether people are more likely to follow rules if they are easy to understand.
Fifth Grade
Sixth Grade
Science fair project which breeds a pair of mice, a pair of rats and a mouse and a rat in order to learn about the difference.
Fifth Grade
Sixth Grade
This science fair project idea examines  whether music has an effect on a person's ability to complete a simple task that requires concentration.
High School
Middle School
Investigate which substances are most effective at removing salt from water.
Ninth Grade
Chemistry
This science fair project idea explores what common compounds can be easily separated out in a centrifuge.
High School
Middle School
This science fair project idea determines an average personĂ¢s ability to use their anaerobic power system over a period of 2 weeks.
High School
Middle School

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