Students were then directed into one of three kinds of four-year high schools: the academic cycle, preparing for college; the science and mathematics cycle, preparing for university programs in engineering and medicine; and the vocational technical cycle.The Ministry of Education announced that nearly 11.5 million students were registered for elementary and secondary schools during the academic year 1986-1987. Statistics on the percentage of young people aged seven through nineteen enrolled in school have not been available since the Revolution.