Which is better for primary school English one-on-one tutoring?

Which is better for primary school English one-on-one tutoring? I want to get full marks in education. I have been focusing on tutoring in primary schools, junior high schools and senior high schools. At present, I have six campuses, namely Xiaoximen Campus, Linyuqiao Campus, Songming Campus, Wenshan Campus, Economic Development Campus and Tengchong Campus, which have trained thousands of students. In all kinds of exams, students have performed well and obtained an ideal school.