Exact(4)
It is important to bear in mind that due to measurement sampling error the classification of students into proficiency levels is inevitably deficient (Betebenner et al. 2008).
A learner corpus with texts allocated into proficiency levels is a useful resource when designing a curriculum for EFL grammar education, as it can provide insights into which grammatical features are most critical to the learner at each stage of their progress.
Against the background of these similarities and differences in first language and second or foreign language reading, in the following we address the constructs of reading proficiency as defined by PISA and German NA, how they were operationalized and classified into proficiency levels.
In order to make interpretation of the scales easier, each scale was divided into proficiency levels with intervals of 50 points (Levels 1 5 for literacy and numeracy and levels 1 3 for problem-solving in technology-rich environment, OECD 2013b).
Similar(53)
According to the institute decree, the scores between 70 and 75 fell into low proficiency group, 75 90 were considered as mid-proficient learners, and 90 100 were categorized as high –proficient ones.
The corpus was further subdivided into three proficiency levels of low, medium, and high based on a range of Education Testing Service (ETS) scores.
Selenium supplementation in sheep diet showed improved ruminal microbial activity, higher bioavailability, catalytic efficiency, and strong adsorbing ability which results into higher proficiency in digestion.
For a categorization into five proficiency levels, the authors suggest the following percentages of accurate classifications depending on the assumed reliability of the test (in parentheses):.70 (.50),.50 (.50),.50 (.50).50
This means that in our study the categorization of test scores into five proficiency levels may inherently lead to a misclassification of about 24%, without taking divergent classifications (TOEFL/German NA) into account.
Language learners are therefore grouped into different proficiency levels in terms of what they can do with language, rather than the ability to handle specific grammatical structures or lexical items.
An alternative way to evaluate the potential gains due to inefficiencies reduction is by comparing the actual distribution of students into PISA proficiency levels defined by the OECD with the potential distribution that would be observed once inefficient schools reached the frontier.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com