By the criterion: g- high
: g score 0.70 g- medium
: . ≥ g s o e ≥ .3
g-low : g score 0.30
J. The Validity of Data
The validity of data refers to the credibility of the data being used. According to Borg and Gall in Wiriaatmadja, there are five criteria of validity in Classroom Action
Research: Outcome Validity, Process Validity, Democratic Validity, Catalytic Validity, and Dialog Validity.
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Furthermore, Luther in Arikunto submits four kinds of validity, which are Face Validity, Triangulation, Critical Reflection, and Catalytic Validity.
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Based on the viewpoints above the researcher chooses Outcome Validity, Dialog Validity, and Critical Reflection as the criteria of the validity in data collecting.
Outcome Validity is taken from the result of the test in each cycle. Dialog Validity refers to the discussion and analysis between the researcher and the teacher as a
collaborator to agree on the decision of intervention and suitable alternative intervention based on the outcome of the research in the reflective phase. The
Critical Reflection refers to plan and arrange each cycle of Classroom Action ‘esea h to i p o e the ualit of stude ts aste .
K. The Criteria of the Action Success
Based on the agreement between the researcher and the teacher who is know well
a out stude ts ge e al skill in English, the criteria of being success in this classroom action research is the 70 achievement of Minimum Mastery Criterion,
Kriteria Ketuntasan Minimal KKM, which is seventy. It means that a student is o side ed to su eed if heshe gets ≥ s o e of 70. In addition, the number of
students who get that score have to reach 70. When the students can reach these criteria, the cycle is stopped. However, if they do not reach them yet, it means that
the students, the teacher, and the researcher must move to another alternative action in the next cycle.
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Rochtiati Wiriaatmadja, Metode Penelitian Tindakan Kelas: Untuk Meningkatkan Kinerja Guru dan Dosen, Bandung: Remaja Rosdakarya, 2006, pp. 164-167.
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Suharsimi Arikunto et.al, Penelitian Tindakan Kelas, Jakarta: Bumi Aksara, 2009, p.128.