Among the most pressing problems facing education reformers was the scarcity of qualified teachers, which has led to serious stunting of educational development. In 1986 there were about 8 million primary- and middle-school teachers in China, but many lacked professional training. Estimates indicated that in order to meet the goals of the Seventh Five-Year Plan and realize compulsory 9-year education, the system needed 1 million new teachers for primary schools, 750,000 new teachers for junior middle schools, and 300,000 new teachers for senior middle schools.