## 5 Time-Series Analysis of Application Results of ICT-Based Education Program
### Analysis of Satisfaction Based on Sub Elements of Education Participants by Year  
First of all, for the survey results of elementary/secondary students, 2571 responses out of 2834 in total were used in the analysis, excluding insincere responses. The sub-elements of the 2017 survey included overall satisfaction level, level of interest, level of engagement, appropriateness of educational content, commitment to further education and detailed satisfaction level. Among them, the mean of overall satisfaction level was the highest at 4.89 whereas the appropriateness of educational contents was the lowest at 4.14. From 2018 to 2020, only detailed satisfaction level was excluded from the satisfaction questions used in 2017, and the rest of the questions were used as they were for the surveys. As mentioned before, the mean for overall satisfaction was the highest at 4.29 and the mean of appropriateness of educational contents was the lowest at 3.41. In 2019, the mean of level of engagement was the highest at 4.59, and the mean of appropriateness of educational contents was the lowest at 3.98. In 2020, the mean of level of interest was the highest at 4.41 whereas the mean of appropriateness of educational contents was the lowest at 3.97. In 2021, survey elements were changed from the previous year to contain overall satisfaction, level of interest, depth of learning, teachers' guidance, opportunities for communication between teachers and students, improvement of problem-solving skills following education, and commitment to further education. Among them, the mean of overall satisfaction was the highest at 4.20, whereas the mean of improvement of problem-solving skills following education was the lowest at 3.85. Generally speaking, the mean of overall satisfaction was the highest in most cases and the mean of appropriateness of educational contents was the lowest. Detailed results are presented in Table 3.  
Secondly, the sub-elements in the satisfaction survey for the education programs for faculty members provided for five years were analyzed. The 2087 faculty members participated throughout the study period, and 1996 sincere responses to the survey questions were utilized in the analysis. The sub-elements in the satisfaction survey tool for faculty members included educational content, education operation and detailed contents, and the same set of questions were used for five years to gather data. Speaking of the satisfaction survey results for sub-questions, the means of educational contents and detailed contents were the highest equally at 4.92 in 2017 and the mean of education operation turned out to be 4.68. In 2018, the mean of satisfaction with educational contents was the highest at 4.83 and the mean of detailed contents was 4.54. In 2019, satisfaction with education operation was the highest at 4.63 and the mean of educational contents was the lowest at 4.48. In 2020, the mean of detailed contents was the highest at 4.74 and the mean of education operation was the lowest at 4.71. In 2021, the mean of educational contents was the highest at 4.67 and the mean of education operation was the lowest at 4.57. All in all, excluding 2019, satisfaction with educational contents remained high, whereas satisfaction with detailed contents was comparatively lower than other elements for the same year. Detailed results are presented in Table 4.  
Thirdly, out of 757 responses from the participants in the school administrator education programs for five years from 2017, only 671 responses were used in the analysis of the results. As is the case with the faculty member survey tool, the school administrator survey tool included such sub-elements as educational contents, education operation and detailed contents. In the 2017 survey, educational contents hit the highest satisfaction level at 4.94, almost equal to the perfect score, whereas the mean of detailed contents was 4.78. In 2018, the mean of education operation was the highest at 4.86 and that of detailed contents was the lowest at 4.80 on average.