Do you have to take every single Physics/Math courses in a university available if you are entering Theoretical Physics? Is Theoretical Physics the same as a Double Major for Maths and Physics? I am only a high school student, but I am taking AP Calculus BC and I will be doing Calculus III in the summer (concurrent studies) and then take Calculus IV when I enter University. But what comes after Calculus IV? Calculus V?? Do I have to do one of those permutation/combination/stat101 courses?? How much Stat courses would I need?