Is the school in the north good?

Northern schools are very good. We should not only look at the admission rate of the school and the proportion of students admitted to the first-tier and second-tier universities, but also the quality of school education. Look at the ratio of its exit quality (college entrance examination scores) and its entrance quality (the quality of students entering this school, that is, the high school entrance examination scores and high school entrance examination rankings). If this ratio is greater than 1, it means that the academic performance of the students who entered the school has improved, and the school's education quality is relatively high; if it is equal to 1, it means that the students who entered the school have not made much academic progress, and the teaching quality is mediocre; if it is less than 1 It shows that the teaching quality of this school is very poor, and the academic performance of students entering this school has declined year-on-year. There is actually no essential difference between the teaching quality of key schools and the teaching quality of ordinary schools. The reason why they have such a high college entrance examination admission rate and admission rate is just because of the high quality of their students and because they have a monopoly on high-quality high school entrance examination students.