This research Reducing Attrition Rate of RMUTP First-year Undergraduate Students Using the Pre-university Program was done to find out the relationship between the pre-university program and RMUTP attrition rate. In addition to the first objective this study aims to find the satisfaction of students toward the learning program. Using a mixed methodology qualitative and quantitative data were collected from students and subjects related to RMUTP pre-university program. In order to describe the research question those data were analyzed together. The results were as follows: 1. Rajamangala University of Technology Phra Nakhon has offered pre-university program for 3 years. This year there are 13 departments within 5 faculty offered the program. 2. A statistical analysis showed that 71.24 percent of the sample group was highly satisfied with the pre-university program. Twenty-seven percent was moderately satisfied with the pre-university program. Only 1.29 percent was less satisfied with the pre-university program. 3. The pre-university program is necessary and can influence students’ grade points. The sample group also suggested teaching subjects to be matched with the subject study in Semester 1. 4. During the past 4 year drop-out is still at the same number to all faculties regardless of the pre-university program. Therefore the cause of high drop-out number might come from other factors that cannot be cured by the pre-university program.