<![CDATA[The objective of this research was to find out the effect of using the Two Stay Two Stray (TSTS) strategy on students’ reading comprehension at the tenth grade of SMA Negeri 4 Pematangsiantar. In this research, the researcher used quantitative research and the method of this research is experimental research by used a true-experimental research design. The population of this research was the students of the tenth grade PMIA SMA Negeri 4 Pematangsiantar, there are seven classes and the total population in this research was 249 students. To determine the sample, the researcher make a lottery, the sample of this research was two classes. The first class is taken from X PMIA-6 with 36 students as control class and the second class is taken from X PMIA-7 with 36 students as an experimental class. So, the total sample in this research is 72 students. In analyzing the data, the researcher used SPSS version 2.1. The result of this research was the students’ score pre-test in the control class is 1876 with a mean score of 52.11 and the students’ score post-test in the control class is 2152 with a mean score of 59.78. Before the treatment of the Two Stay Two Stray strategy, the student's prior knowledge in reading comprehension was less with score pre-test are 1870 with the mean score of 51.94. After the treatment using the Two Stay Two Stray strategy, the students’ score post-test in reading comprehension had been improved are 2808 with a mean score of 78.00. It means that the scores of the experimental class are higher than in the control class because the researcher conducted the research in the experimental class by using a treatment (Two Stay Two Stray Strategy). Then the results of hypothesis testing using T-Test obtained count (9.86) >ttable (1.66), it can be concluded that Ho is rejected and Ha is accepted. It means that the use of Two Stay Two Stray strategy affects significantly students’ reading comprehension at the tenth grade of SMA Negeri 4 Pematangsiantar]]>
