AbstractThe purpose of this study is to develop a model of mathematics achievement based on adjustment among students in teacher training institutes in Malaysia. The structural equation model by partial least squares equations was used to measure goodness of items in terms of validity and reliability. Then, the model of academic adjustment was developed in this study. The data were obtained by distributing a questionnaire to 100 students of the Preparatory Programme Bachelor of Teaching (PPISMP) majoring in Mathematics Education in teacher training institutes. The items were translated and adapted from the Student Adaptation to College Questionnaire (SACQ). The statistics result depending on the outcome measure revealed that academic adjustment emerged as the best predictor in influencing student mathematics achievement. In contrast, this study also found that the variance value for academic adjustment was most influenced by social adjustment. Therefore, the findings gained and the model devel.....