Curricular planning can help students to obtain a systematic and coherent knowledge; however, there is less empirical study which analyzed the data from curricular planning in design field. The main goal of this paper is to realize the influence of the studies of core curriculum on practicum. The data were collected the academic achievement from freshman to junior undergraduates during 2001 to 2004 years in the case of design school and were grouped curricula into core and practicum curriculum according to the framework of strategic planning in design education by Luh and Chen in 2001. The hierarchy regression analysis was used and the results showed that the nine core curricula which consisted of “Introduction to Computers”, “Engineering Graphics”, “Perspective Drawing”, “Introduction to Form”, “Mechanism”,“Computer Aided Design and Manufacturing”, “Introduction to Technology”, “Statistic Methodology”, and “Design Methods” predicted the achievement of practicum, such as “Product Design”, “Human Machine Design”, and “Engineering Design”. More high-level practicum needs more knowledge from logical thinking and integrated strategies, and the above three practicum have coherent effect each other. This paper suggests that the above nine core curricula can be set a threshold of major required courses for enhancing the basic knowledge of design students.