No, junior high school mathematics is the foundation of senior high school mathematics. Without junior high school mathematics, senior high school mathematics can't learn the same knowledge better than junior high school mathematics. For example, the function of junior high school is a simple application, while the function of compulsory one in senior high school is a function of further learning and understanding. Geometry in junior high school mathematics is the foundation of geometry in senior high school, and the second compulsory course in senior high school mathematics is in-depth study of geometry, and so on. There are also simple knowledge points in high school mathematics, but the knowledge in high school has increased and the time for practice has decreased. So some students think that high school mathematics is more difficult. As long as you learn every knowledge point well and do more exercises, you will feel that high school mathematics is very simple.