You may refer to the suggested marking criteria in the teacher’s notes, as well as the Marking Guidelines for HKDSE Paper 2 (Writing) on pp.91-92 of the Standards-referenced Reporting Information Package for English Language (HKEAA, 2009) already disseminated to schools and available for purchase at HKEAA’s online bookstore at:
http://www.hkeaa.edu.hk/en/resources/publications/list_of_publications/hkdse_srr_pub/