For millions of families, the gaokao is the primary mechanism by which a rural or working-class child can enter the professional middle class. This is not just perception — decades of studies confirm the correlation between admission to top universities and long-run income.
But the same studies also show the mobility engine grinding slower over time. Students from the top decile of household income are dramatically over-represented at elite universities relative to their share of the population.
Reasons include the cost and quality gap between urban and rural high schools, the tutoring industry (now legally curtailed but not eliminated), and the provincial quota system that favors students in provinces where the top universities are located.
Recent policy responses include targeted enrollment programs (国家专项计划, 高校专项计划, 地方专项计划) that reserve seats at elite universities for students from designated rural areas. These have helped at the margins but have not closed the gap.
The debate about whether the gaokao is a fair mobility engine, a lottery, or a reproduction mechanism for existing inequalities is one of the most active discussions in Chinese education policy.