The difference of admission scores is equal to the average score of university admission minus the scores of admission batches (one line, two lines and three lines), which means that the average score of university admission exceeds one, two and three books.
Because the difficulty of the college entrance examination paper is different every year, one score line, two score lines and three score lines are different every year. In the case of a certain number of students in each batch, the admission scores of universities are different, but basically the differences in admission lines of universities have not changed much, at least in recent years, so the average admission scores of universities can be estimated according to the differences in admission lines.
Extended data:
There are also some colleges and universities that implement the method of "voluntary clearing", that is, giving priority to the candidates who apply for the school as their first choice. As long as the first volunteer has sufficient students, even if the candidates who apply for the school as the second volunteer have higher scores, they will not be admitted in principle. Unless the school has reserved places for non-preferred candidates; Or when the number of students of the first volunteer candidate is insufficient, it is conditional to admit the second volunteer candidate.
There are grade differences between different professional volunteers in the same school. That is to say, when candidates fail to meet the requirements of the first major and are not admitted to this major, they should subtract a grade difference from the total score and participate in the ranking of the second major.
References:
People's Daily Online-"College Entrance Examination Volunteer Reporting Hotline" opened the reference professional "difference".