PUPILS were yesterday warned that their schools might take advantage of the confusion surrounding admission procedures to refuse them entry to Form Six. The warning came from the deputy director of the Hok Yau Club's student guidance centre, Wu Kai-cheong, who said many pupils were still unclear about the five-stage procedure introduced in 1991. The club is a voluntary student counselling organisation, which sets up an exam hotline each year. Hong Kong Certificate of Education Examination (HKCEE) results will be released on Tuesday and will determine whether pupils can continue on to Form Six at their present school, move to another school, or leave school. The admission scheme requires schools to give priority to their own pupils on the first day of the 11-day admission period. Pupils with 14 points or above in their best six HKCEE subjects (with five points for a grade A and one point for a grade E) can apply to their own or linked schools on day one. If refused, on days two and three - the second stage - they can apply to other schools. In the third stage, on day four, those who pass the minimum A-level entry requirements - six points - may apply to their own or linked schools. In stage four, days five and six, pupils who still have not obtained a place may apply to other schools. And in the last stage, days seven to 11, unplaced pupils can join a central allocation scheme. Mr Wu said the confusing procedure might encourage schools to breach the rules and there was no way for pupils to know they had been unfairly treated. He believed that in previous years many schools had admitted pupils with good results from other schools on the first day, instead of giving priority to their own pupils. He feared the same problem would arise again, because there was no proper monitoring system. ''Although all schools are advised to admit their own pupils [with more than 14 points] on the first day, schools can still use many excuses to refuse them,'' Mr Wu said. Schools might refuse to admit pupils on the grounds of poor results in English or Chinese language, passes in the ''wrong'' subjects or misconduct at school, he said. The Education Department's Education Officer (Administration), Dai Ho Tin-mei, denied monitoring was inadequate. She said schools had to submit to the department the names of pupils they admitted on each day of the scheme. The department's officers would patrol the schools, she said. Four central hotlines would be set up to answer questions or handle complaints. But Mr Wu said that at a seminar for more than 1,000 pupils on Thursday, many did not understand the procedures. They were unclear about what they should do with their qualifications and which day they should go for registration.