This goal of this research is to determine the differences adjustment of students of STAIN Kudus graduated from public school and Islamic school (Madrasah). The sampling technique in this study is purposive random sampling. They are 25 students of STAIN Kudus who graduated from Islamic school and 25 students of STAIN Kudus who graduated frompublic school. This research uses questionnaire of adjustment scale. For analysing data, I use program Statistical Package for Social Science (SPSS) for Windows version 11.0. The result of this research is the Equal variances assumed t at the signiï¬ cance level = 0415 is 0680. It means that the probability 0.680 > 0.05. The price of table t (0.05, DF 48) = 0681. Thus t = 0415