MathWorks Math Modeling (M3) Challenge
I have come across the following competition you may be interested in
MathWorks Math Modeling (M3) Challenge is a contest for high school juniors and seniors in the U.S. and sixth form students in England and Wales. Through participation, students experience what it’s like to work as a team to tackle a real-world problem under time and resource constraints, akin to those faced by professional mathematicians working in industry. Extra credits awards are available for teams who choose to write or employ outstanding code as part of their solution. The Challenge awards $100,000.
The Challenge is entirely Internet-based with no registration or participation fees.
For more information see MathWorks Math Modeling Challenge | Society for Industrial and Applied Mathematics (siam.org)