I have been to ladder pedagogy. Before that, she always said that she didn't learn a few math knowledge points. When she was tutoring, she didn't give her key lessons. The ladder teacher is a great person, which made her understand at once. The ladder teaching method feels different from the general traditional remedial institutions. The key point is that the teachers are all famous schools in Shanghai. They can teach students in accordance with their aptitude and study at home. It's good.