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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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Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?
Life Science
Seventh Grade
Science fair project in which you will graft branches from different fruit tree onto a root stalk.
Botany
Eighth Grade
Science fair project that determines whether spreading a moss soup over an area increases moss growth.
High School
Life Science
Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.
High School
Microbiology
This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.
High School
Life Science
Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.
Life Science
Seventh Grade
Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.
Life Science
Fifth Grade
This science fair project idea  determines whether plants grow better in soil or in fish ponds.
High School
Botany
Science fair project that creates a pamphlet to help others learn about Epilepsy, its causes, symptoms and treatments.
High School
Anatomy

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