High School Science Fair Projects

Need a science fair project that's fun, engaging, and appropriately rigorous for a high school science fair? 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  determines whether dogs can be trained faster using a food reward or praise.
High School
Generate gas from garbage. The purpose of this science fair project is to simulate how landfills generate gases that can be used to create energy.
High School
Middle School
Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.
High School
Elementary School
This science fair project challenges students to research and interact with the animals and plants that live in tide pools and test a practical use of tidepools
High School
Middle School
Science fair project which examines the chemical reaction of a candle flame with various gases in order to determine the identity of the gas.
Seventh Grade
Eighth Grade
A math project teaches students to use a clinometer to gauge the height of very tall objects like trees & to think of better ways to measure how high they are.
High School
Middle School
This science fair project idea assesses the effect of music on work performance.
High School

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