What is the significance of the existence of twelve-year compulsory schools? Can poor students go to such a school to avoid the diversion of the senior high school entrance examination and go directly

What is the significance of the existence of twelve-year compulsory schools? Can poor students go to such a school to avoid the diversion of the senior high school entrance examination and go directly to high school? Upgrade the 12 academic system, and their children also need to pass the senior high school entrance examination. Only by passing the senior high school entrance examination can they be admitted to their ideal high school or directly enter our school. Their only advantage is that they have been studying in this school, and they may have certain advantages in the questions of future exams or the educational resources of teachers.