A Study of Factors Affecting Student’s Decision to Drop out School: A Case Study of Faculty of Industrial Textiles and Fashion Design Rajamangala University of Technology Phra Nakhon was an applied research. It was designed for analyzing the voice of customers in student studying management. The samples group was four department students in the Industrial Textiles and Fashion Design faculty as Garment Technology Textile Chemistry Technology Fashion and Design and Product design who retired during study and graduated in 2014 and 2015 academic year. The research results were used for improving the study efficiency and reducing the unexpected study. From the results shown the most problem was withdrawn registration especially in the first and the second year student. Garment technology department was the highest rate of retention after that Fashion and design Textile Chemistry Technology and Product design were respectively. The education satisfactions survey was found the moderate level for curriculum and lecturer as the mean 2.57 and 3.14 orderly. Additional the environmental satisfaction was low as 2.26 for the unexpected education students. In the other hands the graduated students had the greater satisfactions for the whole factors. The curriculum satisfied was good as 3.30 the lecturer was best as 3.67 and the environment was moderate as 2.95 correspondingly. From these results the Faculty of Industrial Textiles and Fashion Design were developed and pay attention in the subjects and lecturer in the first and second year education. The understanding of core study and the essential of each department was the significant factor for retaining and priding the student until they graduated in the Faculty of Industrial Textiles and Fashion Design.