Batch admission control score line is the lowest score line standard for each batch and each subject of freshmen determined by the provincial entrance examination institutions according to the college entrance examination results and enrollment plan of the candidates in this province in a certain proportion. Admissions institutions can only admit candidates whose batch admission control scores are above. Only the files of candidates whose college entrance examination features reach or exceed the batch line (usually called "online candidates") can be filed in colleges and universities, and colleges and universities will choose to accept them. Because key universities are arranged in the first batch of undergraduate courses, the control scores of the first batch of undergraduate courses are also called "key lines" and "national lines". Correspondingly, the second batch of undergraduate control scores are also called "provincial line" and "undergraduate line". 2 The meaning and classification standard of batch line will be different for different batches and subjects. Subjects are usually divided into literature and history, science and engineering, art, sports and so on. Literature and history and science and engineering are usually divided into the first batch (key undergraduate batch), the second batch (ordinary undergraduate batch), the third batch (independent colleges and private undergraduate colleges) and the fourth batch (higher vocational colleges). Because the first batch of admissions are mainly national key universities (some of which are approved ordinary undergraduate colleges), this batch of admission control scores is also called key lines. The second batch of admission colleges are mainly ordinary undergraduate colleges (individual ones are approved private colleges or independent colleges), so the designated control score line, also known as the undergraduate rhinoceros undergraduate line, is generally determined by slightly more than the planned enrollment, and its calculation method is to measure down from the first batch of control score lines including the first batch of remainder until the number of people is more than the second batch of planned enrollment, and this score is the control score line. The third batch of colleges (undergraduate) are mainly independent colleges, private colleges and some colleges (majors) with higher fees. The fourth batch of colleges (higher vocational colleges) are all colleges (majors) at the level of higher vocational colleges (specialties) except higher vocational colleges. Its admission score line is generally also called the specialist line.