Abstract:
The objective of this study were 1) to study the predictive validity of GAT, PAT, O-NET and grade point average of high school (GPAX) for university admission, 2) to analyze the student-level and field of study-level factors affecting undergraduate achievement, and 3) to develop the prediction equation of undergraduate achievements using GAT, PAT, O-NET and grade point average of high school (GPAX) in 7 fields of study. Samples were 14,634 students admitted through the central university admission system, 2009 academic year. Results were as follows: 1. GAT, PAT, O-NET and grade point average of high school (GPAX) were positively correlated with the undergraduate achievement at .05 level of significance in all fields of studies except Agricultural Science, whose O-NET (Health and Physical Education, Occupation and Technology) was not positively correlated with the undergraduate achievement at .01 level of statistical significance. 2. Predictive validity coefficients of GAT, PAT, O-NET and grade point average of high school (GPAX) have relatively low levels in all fields of studies especially O-NET in Health and Physical Education, Art, and Occupation and Technology. 3. The student-level and field of study-level factors affecting undergraduate achievement in each field of study were different. 4. The prediction equation of undergraduate achievements using GAT, PAT, O-NET and grade point average of high school (GPAX) in each field of study were different.