1. Learning environment
No matter whether they are admitted or not, it is undeniable that students in cities have a better learning environment, whether in terms of teachers, school environment or subjects offered by schools. Many rural students have to walk a long way to school every day, and the school will not offer other courses except the necessary examination subjects. And there are many teachers who hold several jobs. A teacher may be a PE teacher while teaching math. When I was in junior high school, the chemistry teacher was a PE teacher.
2. During the winter and summer vacations
Children in the city, whether they are cramming compulsory subjects or special classes with hobbies, will basically attend various cram schools on weekends or winter and summer vacations. Now not only do you study well, but you also have various hobbies. Therefore, in terms of specialties, urban children are more dominant.
Every holiday, the children in the village either play at home and help with housework and farm work, or go to the place where their parents work. So I have to say that it makes sense for students in the city to get good grades. People spend more time and energy.
3. Family factors
Students in the city, even if their parents are not teachers, have attended more schools, which can help their children learn. Even if you can't help your child talk about the topic and go home from work, you can urge your child to do his homework. Most of the children in the village are left-behind children, and their parents work outside the home and don't care much about their studies.
The college entrance examination is a fair exam. As long as you pass the score line, you will have the opportunity to apply to the university. To sum up, most students in cities have better grades than those in villages, so the enrollment rate in cities is higher than that in villages.