This research aims to examine the effect of Problem Based Learning (PBL) Model on students reading comprehension of narrative text at grade XI of SMA Swasta Nasional Petatal in 2024/2025 academic year. Using a quantitative method with a pre-test and post-test experimental design, this research involved students in class XI-A and XI-B who were selected through a random sampling technique. Students' reading comprehension was assessed through pre-test and post-test results to determine the effectiveness of the PBL model in improving their understanding of narrative texts. The results showed a significant increase in reading comprehension, with an average score increase of 9.1% in one group and 15.8% in the other group. Data analysis using the t-test revealed that the increase was significant, as evidenced by the t-scores value exceeding the critical value at the 0,05 significance level. With degrees of freedom (df) 68 and a significance level of 0,05, the t-scores value was obtained of 7,16 which was greater than the t-table, which was 1,668 (7,16 > 1,668). These results indicate that the alternative hypothesis (Ha) is accepted, which confirms the effectiveness of the PBL model in improving students' reading comprehension of narrative texts.
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