Data mining is a process of extracting and identifying previously unknown and potentially useful information or pattern from large amount of data using different methods and techniques. Data mining in a domain of education is known as Educational data mining (EDM). This paper discusses about an expertise system which can used as student placement prediction system. A statistical model is applied on a reputed college’s past data after data pre-processing and feature selection. This model can be used to predict the percentage of chances of a student getting selected in campus placement. It will help students evaluating themselves and identifying which skills are essential.