This article provides a brief overview of mathematics competitions in the United States across various stages, as well as the most influential competitions at each level.
In the set of Art of Problem Solving textbooks, math problems are ranging from introductory to Olympiad level to challenge all types of middle school students looking to learn from their books.
Beast Academy is a rare example on the U.S. market of high-quality educational material designed for elementary school students, and it presents a certain level of difficulty.