This study aims to understand the impact of implementing Christian Religious Education learning using the Jigsaw model on students' participation levels and learning achievement. Data collection regarding the implementation of learning using the Jigsaw model on students' engagement levels and learning outcomes in class VIII-1 of SMP Negeri 2 Sei Bamban was conducted using a Likert-scale questionnaire. The Likert scale was employed to measure the attitudes, opinions, and perceptions of individuals or groups towards observed social phenomena. Data analysis was conducted through four stages: planning, action implementation, evaluation, and reflection. The results of the data analysis indicate that the average score of the learning questionnaire using the Jigsaw model on students' engagement levels and learning outcomes increased from cycle I to cycle III. This increase is reflected in the average score increment of 3.36 in cycle I, 3.42 in cycle II, and 3.47 in cycle III. Additionally, the correlation between teacher guidance/counseling and student study discipline also increased as the learning cycles progressed. This correlation increased from 80.8% in cycle I to 90.1% in cycle II, and reached 91.7% in cycle III.