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ERIC Number: EJ1150279
Record Type: Journal
Publication Date: 2017
Pages: 17
Abstractor: As Provided
ISSN: ISSN-1479-4802
Some Implications of Choice of Tiering Model in GCSE Mathematics for Inferences about What Students Know and Can Do
Bramley, Tom
Research in Mathematics Education, v19 n2 p163-179 2017
This study compared models of assessment structure for achieving differentiation across the range of examinee attainment in the General Certificate of Secondary Education (GCSE) examination taken by 16-year-olds in England. The focus was on the "adjacent levels" model, where papers are targeted at three specific non-overlapping ranges of grades. Examinees enter for a pair of papers at adjacent levels and receive the highest grade achieved. There is no aggregation of marks across papers. This study used simulation, based on data from a GCSE Mathematics exam, to compare the adjacent levels model with two other tiering models in terms of: (1) suitability of grade boundary locations; (2) score distributions; and (3) reliability. The adjacent levels model led to lower reliability but arguably improved two aspects of validity: the strength of the inference about what examinees with a given grade would know and be able to do; and the removal of the ambiguity about overlapping grades inherent in the current system.
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Publication Type: Journal Articles; Reports - Research
Education Level: Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: United Kingdom (England)
Grant or Contract Numbers: N/A