This research was purposed to know the effectiveness of generative learning model with write-pair-switch strategy in mathematics learning for students of grade X SMA Negeri 9 Makassar. The design of this study was Pre-Experimental Design, namely One-Group Pretest Posttest Design. This study involved two experimental classes, X.2 consist of 33 students and X.5 consist of 35 students by using simple random sampling technique. The data were collected by using students mathematics achievement test, learning implementation observation sheet, students activity observation sheet, and students response questionnaire. The techniques of data analysis were descriptive statistical analysis and inferential statistical analysis. The results of this study reveal that: 1) student’s learning achievement before being taught by using generative learning model with write-pair-switch strategy are in very low category, however student’s learning achivement after being taught by using generative learning model with write-pair-switch strategy are in high category, student’s learning achievement after being taught by using generative learning model with write-pair-switch strategy achieved minimal completeness criteria, the improvement of student’s learning achievement (gain) are in high category, student’s learning achivement after being taught by using generative learning model with write-pair-switch strategy did not achieve the classical mastery, and student’s attitude are in good category; 2) student’s activity in learning processes with generative learning model with write-pair-switch strategy are in good category; and 3) student’s response toward the implementation of generative learning model with write-pair-switch strategy are in tend positive category. Based on the criteria of effectiveness, generative learning model with write-pair-switch strategy is not effective in mathematics learning for students of grade X SMA Negeri 9 Makassar