Abstract
This paper aims to study the problem of the dropout situation of students in the business computer program at the University of Phayao. It consists of three sub-goals: 1) identifying the factors, 2) studying the relationship of factors, and 3) testing the relationship model. Data collected 389 students from the Department of Business Computer at University of Phayao from the academic year 2012-2019. 
 The tools used in the research are statistical data analysis and machine learning. It consists of percentages, decision tree algorithms, cross-validation methods, and the confusion matrix performance. The results showed that the dropout rate of learners in business computer program tended to increase even though the number of new students decreased. In addition, it was found that factors affecting the dropout consisted of seven courses: 221110, 221120, 001103, 128221, 005171, 122130 and 128221. 
 The model obtained as a high performance level of prediction with accuracy is equal to 87.21%. Based on the research results, the researcher found that the academic results had a significant influence on dropout, which were mostly obvious with the students in their first academic year.
Highlights
Education is a tool for developing people, raising the level of knowledge, thinking processes, and methods of survival in society [1,2]
Decision tree algorithms, cross-validation methods, and the confusion matrix performance
The first set is 108 students who studied during the academic year 2012-2015, the second set is 102 students who studied during the academic year 2013-2016, the third set is 59 students who studied during the academic year 2014-2017, the fourth set is 42 students who studied during the academic year 2015-2018, and the last set is 71 students who are currently studying in the academic year 2016-2019
Summary
Education is a tool for developing people, raising the level of knowledge, thinking processes, and methods of survival in society [1,2]. The educational system and educational management process have various patterns such as education in the system, formal education, and informal education. All patterns of education are consistent with lifelong learning styles. The educational process still has many obstacles. One of the major problems is the dropout of students. The problems of student’s dropout appear in all education levels, all ages, and in all countries [5,6,7,8,9, 13,14,15]
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