THE Convocation of the Chinese University of Hong Kong, an association of former graduates, has urged the Government to reinstate the four-year degree system after a survey on students' performance. The survey showed that 90 per cent of respondents felt the standard of students had dropped since the Government standardised the tertiary academic system five years ago to three years. More than 16,000 tertiary students, tertiary teachers, secondary teachers and employers were interviewed between April and June last year. The findings showed respondents were dissatisfied with tertiary students' Chinese and English language ability, social consciousness and knowledge of their non-major subjects. The survey was conducted by the Hong Kong Polling and Business Research Company.