The discussion compares US high school physics and mathematics courses with British A-level courses, focusing on the final year before university. In the US, precalculus typically covers trigonometric functions, identities, geometry, polynomials, and introduces limits using epsilon-delta definitions. High school calculus includes basic integration and differentiation, limits, and applications, aligning with AP Calculus AB and BC standards. AP Calculus AB covers fundamental calculus concepts, while AP Calculus BC extends into more advanced topics like infinite series and polar coordinates. Many US high schools also offer opportunities for students to take college-level courses, such as Multivariable Calculus and Differential Equations, with some schools providing Linear Algebra. Overall, while there is a general consistency in the curriculum across states, variations exist in the depth of proof work and calculus exposure in precalculus courses.