This research was prompted by low achievement in Islamic Religious Education (PAI) among eighth-grade students at SMPN 2 Ampek Angkek. The study aimed to determine the effect of implementing the Teaching at the Right Level (TaRL) approach on students’ learning outcomes in Islamic Religious Education. This study employed a quantitative approach using a quasi-experimental method with a Nonequivalent Control Group Design. The population consisted of 60 students, all of whom were selected as the sample through total sampling, consisting of Class VIII.2 as the experimental class (n = 30) and Class VIII.1 as the control class (n = 30). Data were collected using a 20-item multiple-choice test and analyzed using N-Gain and the Mann–Whitney U test. The results showed that the mean pretest score of the experimental class increased from 50.17 to 82.00 on the posttest, while that of the control class increased from 45.33 to 72.33. The mean N-Gain score of the experimental class was 0.65, which was higher than that of the control class at 0.51. The Mann–Whitney U test resulted in a Z value of −2.820 with a significance value of 0.005 (p < 0.05); therefore, H₀ was rejected and Hₐ was accepted. Thus, the implementation of the TaRL approach had a significant effect on the Islamic Religious Education learning outcomes of eighth-grade students at SMPN 2 Ampek Angkek.
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