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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In this experiment, students create music with subliminal messaging to try to influence people's decision-making.
High School
Ninth Grade
This science project examines the thermal properties of several major greenhouse gases.
High School
Earth & Space Science
This science fair project compares the abilities of men and women to understand subtle communication through body language.
High School
Psychology and Sociology
In this cool robotics project, construct a motorized robot with a sensor and put it through a maze test to find the number of errors it makes along the way.
Ninth Grade
How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.
Ninth Grade
In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.
High School
Ninth Grade
In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.
High School
Applied Science
This experiment investigates whether the Ranschburg Effect is observed more frequently in older or younger adults.
High School
Ninth Grade
This experiment will explore whether fractals really repeat themselves infinitely.
High School
Applied Mathematics
Is your kid crazy about science? Check out this selection of advanced science projects that revolve around the sun.
High School
Science Fair Project Ideas

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