To cope with the shortage of qualified teachers, the State Education Commission decreed in 1985 that senior-middle-school teachers should be graduates with two years' training in professional institutes and that primary-school teachers should be graduates of secondary schools. To improve teacher quality, the commission established full-time and part-time (the latter preferred because it was less costly) in-service training programs. Primary-school and preschool in-service teacher training programs devoted 84 percent of the time to subject teaching, 6 percent to pedagogy, and psychology, and 10 percent to teaching methods. In-service training for primary-school teachers was designed to raise them to a level of approximately two years' postsecondary study, with the goal of qualifying most primary-school teachers by 1990. Secondary-school in-service teacher training was based on a unified model, tailored to meet local conditions, and offered on a spare-time basis. Ninety-five percent of its curricula were devoted to subject teaching, 2 to 3 percent to pedagogy and psychology, and 2 to 3 percent to teaching methods. There was no similar large-scale in-service effort for technical and vocational teachers, most of whom worked for enterprises and local authorities.