The objective of this study was to improve English grammar acquisition among female students in the fourth preparatory school year by employing the jigsaw technique. To accomplish this objective, the researcher employed an experimental methodology and chose the sample from Yarubia Preparatory school which consisted of seventy two (72) female. The researcher selected two classes: one as the experimental group (36 students) and the other as the control group (36 students). During the second term of the 2025–2026 school year, the control group learned the old way, while the experimental group learned the jigsaw approach. The primary instrument of the study was an accomplishment test including four areas and comprising 32 validated items. It was given as a pre-test to make sure the two groups were the same and as a post-test to see how their achievements differed. We used SPSS, the T-test, as well as Mann-Whitney test to collect data that we obtained and figure out how important and what direction the results were going. Effect size was also assessed to see how the jigsaw method affected things. The results showed big disparities for the benefit of the test subjects the experimental group, which showed that the technique worked. The research advised using the jigsaw method to teach English grammar and said that more research should be done to see how it affects other language skills and disciplines.