Every school may be different. For example, in Qidong Middle School where I am located, the first semester of senior one: set, function concept, basic elementary function; The second semester of senior two: solid geometry, plane analytic geometry, trigonometric function, plane vector, trigonometric identity and other transformations; The second semester of senior two: compulsory 4, there are many dispensable things, which we learned when we were studying, so we chose them quickly, and some schools chose them.