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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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Showing 61 to 75 of 154
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
Hypothesize goldfish ability to display long term memory based on your experience training the fish. Evaluate the abilities of goldfish to succeed at tasks.
High School
Zoology
This science project idea studies differences between drugstore brand and expensive salon brand shampoos.
High School
Life Science
This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.
High School
Zoology
Science fair project that determines whether spreading a moss soup over an area increases moss growth.
High School
Life Science
In this science fair project, you will determine the effects of acids and bases on red cabbage. Use Education.com for free science fair project ideas!
High School
Botany
This science fair project idea teaches what wildlife rehabilitators do and about the process of wildlife rehabilitation.
High School
Zoology
In this science fair project you will discover which nutrients are best for plants. Use Education.com for science fair project ideas!
High School
Botany
Science fair project that determines whether brain size is correlated with intelligence.
High School
Anatomy

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