The implementation of multiple entrance programs has demonstrated the restriction of single source recruiting. Students from different entrance sources appear different learning background, expertise, learning motivation, and the implemented learning strategies. Recently the college entrance program has the tendency moving toward two channels: (1)recommendation and screening; (2)test and placement. A new entrance program will be implemented by the academic year of 110 that application will dominate with a supplement of placement. Student's working achievement and performance on competition will be included in the recruiting consideration to reach a physical student multiplicity rather than channel multiplicity. This study aims to examine the difference of academic achievement among multi-entrance system and the results should provide information for school enrollment capacity and guidance activities. Students in Shih Chien University Kaohsiung Campus will be the study subject and the relationships of entrance sources, family and personal background, and academic achievement will be investigated. The research results show that: (a) student's academic achievement is statistically different by various entrance channels; (b) previous academic results, gender, and parent's discipline also appear statistical difference; (c) the relationship between personal interest and study area is highly correlated with academic achievement; (d) model of channel multiplicity perform a better job than that of student multiplicity on distinguishing the difference of academic achievement.