Kompetensi-Kompetensi Dasar it includes; the objective of the test, the indicator, and the instructions with in order to the instrument is valid. SK-
KD is based on the curriculum “KTSP Curriculum”, the SK-KD can be seen
on the researcher’s lesson planning. Then the writer decided the reliability of test. Reliability is a
necessary characteristic of any good test, for it is to be valid at all, a test must first be realiable as a measuring instrument.
7
In order to attain the reliability of the instrument, the writer used the rubric of writing, namely
“analytical scoring” by Jacobs et all.
8
There are some aspects in scoring writing by Jacobs et all, such as; content, organization, vocabulary,
language use, and mechanics. The advantages of analytical scoring is, the scores are compiled to consider aspects of performance which they might
otherwise ignore and the very fact that the scores has to give a number of scores will tend to make the scoring more reliable. Besides the disadvantage
of the analytica method is the time that it takes, scoring will take longer. The composition profile by Jacobs et all can be seen in the following table
of data collection.
E. Technique of Data Collection
Technique of data collection in this research used quantitative data. The quantitative data used test as the instrument which was used to collect
the data of the research score. The test was distributed through pre test and post test.
The aim of test is to measure students’ ability in writing descriptive
text and to know the effectiveness of cooperative learning method on students’ ability in writing descriptive text. As stated in J.B Heaton’s book,
a test which sets out to measure students’ performances as fairly as possible
7
J.B Heaton, op. cit., P. 162.
8
Arthur Hughes, Testing for Language Teachers Second Edition, Edinburgh: Cambridge University Press, 2003, p. 102.
without in any way setting traps for them can be effectively used to motivate them.
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The test that is used in this study is pre-test and post-test. a. Pre- test
Both classes Controlled Class and Experimental Class were given the test about the material before the class and the teaching begin or
conducted before applying cooperative learning method. The writer gave the topic of pre-
test is about “The Idol”. The test was conducted on November 5
th
2013. b. Post- test
Both classes Controlled Class and Experimental Class were given the material after the class and teaching begins or conducted after
applying cooperative learning method. The writer gave the treatment for six meetings in experimental and controlled class. After that the
writer gave the post- test of both classes, the topic is about “The
interesting places” After pre-test and post-test had been done then the writer gave the
score of each student’s writing. To get the writing score the writer used the table of scoring writing, the table as follow:
9
J.B Heaton, op.cit., p. 7.
