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johnnywalker 發表於 14-7-17 14:09
另一個大家可以思考既問題係,中又好英又好,都係拉curve,中文卷就算點深,年年合格率都係同英文差唔多,即係話 ... Well, I am afraid we cannot simply use "拉curve" to describe the standard setting. Please refer to http://www.hkeaa.edu.hk/DocLibrary/Media/Leaflets/HKDSE_SRR_A4_Booklet_Jun2011.pdf which was recap below for your easier reference:
Part 5
"The HKEAA adopts a strategy that combines the benefits of both expert judgment and statistical methods. Experts make use of statistical recommendations and other reference data to make the most robust decisions possible in cut score determination. In principle, the standards of all HKDSE subjects in the 2012 examination will be set with reference to the level descriptors and actual performance of candidates in the examination. To support experts' decision making, different statistical techniques will be applied to different subjects to produce recommended cut scores. The methodologies are as follows:
Core subjects
In setting standards for the four HKDSE core subjects -Chinese Language, English Language, Mathematics and Liberal Studies, reference will be made to the actual performance of candidates in the 2012 HKDSE Examination in relation to: the level descriptors; the standards of candidates in the 2011 Hong Kong Advanced Level (HKAL) Examination; the standards of candidates in the 2010 Hong Kong Certificate of Education (HKCE) Examination.
In order to provide some background information about standards in the HKDSE and previous HKCE/HKAL examinations, secure monitoring tests for the core subjects were administered to samples of HKCE school candidates in 2010 and HKAL school candidates in 2011. The same monitoring tests will also be administered to a selected sample of candidates sitting the 2012 HKDSE Examination. In the first administration, the statistical data from the monitoring tests will help provide some linkage of the standards in the HKDSE and the previous HKCE and HKAL examinations.The panel of judges will refer to the following information in making their decisions on cut scores: marked live scripts, selected according to total marks; inter-paper correlations, the mean and standard deviation of the current year's papers; paper mark cumulative distributions; feedback from markers on the level of difficulty of each particular examination paper; performance samples from the HKDSE SRR Information Packages; HKAL and HKCE papers and library scripts from 2011 and 2010 examinations respectively."
Part 6:
"Once set, the standards need to be maintained in subsequent years starting from 2013 so that results are comparable across years. "
Separately, you may wish to note that for elective subjects, "a group ability index (GAI) will be used as a reference for grading elective subjects. The GAI is a set of percentages generated statistically for obtaining a suggested set of cut scores. For a group of candidates taking a specifi c elective subject, a GAI can be calculated for each level based on the number of candidates in this group achieving that level in the four core subjects."
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