The purpose of this study is to determine factors that affect boarding school student achievement MAN 1 Surakarta. This research used descriptive quantitative method. The population in this study were boarding school students at MAN 1 Surakarta in 2013, which amounts to 198 students. Number of samples taken is 140 respondents. The sampling technique used in this study was proportionate stratified random. Techniques of data collection using questionnaires and documentation. The data analysis technique used was the exploratory factor analysis. Based on the results of the data analysis and discussion, it can be concluded that there are 13 factors that can affect boarding school student achievement MAN 1 Surakarta in 2013. From the thirteen factor which influence boarding school student achievement at MAN 1 Surakarta, the biggest factor is the learning process approach, because these factors have a percentage of variance up to 17.393%.