A decision tree is one of the techniques in data mining for prediction. Using this method, hidden information from abundant of data can be taken out and interpret the information into useful knowledge. In this paper the academic performance of the student will be examined from 2002 to 2012 from two faculties; Faculty of Manufacturing Engineering and Faculty of Microelectronic Engineering in University Malaysia Perlis (UniMAP). The objectives of this study are to determine and compare the factors that affect the students' academic achievement between the two faculties. The prediction results show there are five attributes that have been considered as factors that influence the students' academic performance.