THE proposals outlined in the policy speech are not enough to improve teaching, according to the Legco teachers' representative Cheung Man-kwong. He said the education system needed a comprehensive review. He was puzzled by the Government's lack of concern for tertiary education, particularly the fall in standards since the plan to expand the number of tertiary places was implemented. In his October 6 speech, Mr Patten proposed a $300-million language fund to upgrade language teachers' skills in view of the need for better Chinese. He also pledged to add at least 1,636 teachers, including 800 graduate secondary teachers and 836 non-graduate primary teachers by next September. About 860 primary school teaching posts would also be upgraded to the graduate level. Mr Cheung said the Government should abandon its ''piecemeal'' approach. He said the Government should have mapped out a manpower supply strategy before it increased the number of graduate posts in primary schools. ''He [Mr Patten] is going to increase the number of graduate teachers in the primary schools, but where will these teachers come from?'' he asked. Independent legislator Timothy Ha Wing-ho accused the Government of ignoring the brain drain in the teaching profession, suggesting that terms be improved.