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 aims to examine the nature of pi and analyze other properties and values related to circles, such as radius, diameter
High School
Middle School
The objective of this project is to determine if a specific strategy for buying or selling stock in the stock market might be profitable over a period of time.
High School
Middle School
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
In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.
High School
Tenth Grade
The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.
Twelfth Grade
Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.
High School

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