The objectives of this research are to investigate which of the two sub-skills in reading is more effective for comprehending the text, and to find out whether there is any significant difference of students’ reading comprehension achievement between those who are using information categorizing and those of using fact-opinion categorizing. This is a quantitative study which had intact group pre-test post-test design.The result shows that there is a significant difference of students’ reading comprehension achievement between those who were taught using information categorizing and those taught using fact-opinion categorizing. The significant increase of students’ achievement in the experimental class I (information categorizing) is (p0.05, p=0.00) with the increase of mean in pre-test and post-test is 19.34 points. Meanwhile, in experimental class II (fact-opinion categorizing) the significant increase of pre-test and post-test is also (p0.05, p=0.00), but the increase of mean is only 12.37. It indicates that the information categorizing is more effective sub-skill than fact-opinion categorizing in increasing the students’ reading comprehension achievement. Keywords: Comparative Study, fact-opinion categorizing, information categorizing, reading achievement.
                        
                        
                        
                        
                            
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