This study aimed to examine the effect of the flipped classroom approach based on the students’ project Rahma for the World in enhancing the speaking skills of eleventh-grade students at Nour Al Uloom Islamic Secondary School. A descriptive quantitative experimental method was employed using a one-group pretest–posttest design. The findings revealed that the flipped classroom approach integrated with the students’ project had a statistically significant impact on improving students’ speaking skills. The mean post-test score (16.43) was higher than the mean pre-test score (12.86). The Mann–Whitney U test indicated a significance value (Asymp. Sig. (2-tailed)) of 0.000, which is less than 0.05. Therefore, the null hypothesis (H₀) was rejected, and the alternative hypothesis (Hₐ) was accepted.
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