## 5 Time-Series Analysis of Application Results of ICT-Based Education Program
### Analysis of Satisfaction Based on Sub Elements of Education Participants by Year
In 2019, the mean of detailed contents was 4.10 and the mean of satisfaction with educational contents hit only the 3.xx-range at 3.81 during the five years. In 2020, the mean of detailed contents was the highest at 4.5 and the mean of education operation was the lowest at 4.46. In 2021, satisfaction level with education operation was the highest at 4.79 and the mean of detailed contents was 4.44. All in all, satisfaction level with education operation remained high except for 2019. Table 5 shows the results of school administrator satisfaction survey specific to each sub-element. \begin{table}
\begin{tabular}{c c c c} \hline \hline  & **No. of** & & **Standard** \\  & **Cases** & **Elements** & **Mean** & **Deviation** \\ \hline  & & Overall satisfaction & 4.89 & 0.45 \\  & & Level of interest & 4.71 & 0.57 \\
2017 & 522 & Level of engagement & 4.58 & 0.57 \\  & & Appropriateness of educational contents & 4.14 & 0.93 \\  & & Commitment to further education & 4.45 & 0.68 \\  & & Detailed satisfaction level & 4.80 & 0.31 \\  & & Overall satisfaction & 4.29 & 0.82 \\  & & Level of interest & 4.25 & 0.86 \\
2018 & 284 & Level of engagement & 4.09 & 0.88 \\  & & Appropriateness of educational contents & 3.41 & 0.85 \\  & & Commitment to further education & 3.86 & 1.03 \\  & & Overall satisfaction & 4.25 & 0.59 \\  & & Level of interest & 4.34 & 0.64 \\
2019 & 505 & Level of engagement & 4.59 & 0.66 \\  & & Appropriateness of educational contents & 3.98 & 0.82 \\  & & Commitment to further education & 4.14 & 0.84 \\  & & Overall satisfaction & 4.39 & 0.83 \\  & & Level of interest & 4.41 & 0.84 \\
2020 & 769 & Level of engagement & 4.33 & 0.84 \\  & & Appropriateness of educational contents & 3.97 & 0.95 \\  & & Commitment to further education & 4.18 & 0.90 \\  & & Overall satisfaction & 4.20 & 0.85 \\  & & level of interest & 4.09 & 0.89 \\  & & Depth of learning & 4.02 & 0.91 \\
2021 & 491 & Teachers’ guidance & 4.11 & 0.90 \\  & & Opportunities for communication & 4.18 & 0.91 \\  & & between teachers and students \\  & & Improvement of problem-solving skills & 3.85 & 0.87 \\  & & following education & \\  & & Commitment to further education & 4.03 & 0.99 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Survey results of elementary and secondary school students’ satisfaction based on sub-elements by year. Fourthly, 3918 persons participated in the education programs for the general public, constituting the biggest participant group, and 3525 responses were utilized in the analysis, excluding incomplete ones. The sub-elements of the survey were the same as those used for faculty members and school administrators. In the 2017 survey of the satisfaction level of the general public, the mean of educational contents was the highest at 4.79 and the mean of education operation was the lowest at 4.59. In 2018, the mean of education operation was 4.37 and the mean of educational contents was the lowest at 4.20. In 2019, the mean of education operation was overwhelmingly high at 4.85, but the mean of detailed contents was relatively low at 4.42. In 2020 and 2021, the mean values were relatively lower than in other years, with the highest mean in 2020 being for educational contents at 4.24 and the lowest being for detailed contents at 4.00. In 2021, the mean of satisfaction level with education operation was 4.28 and the mean of educational contents was 4.11. Satisfaction level in the education program for the general public, where the participating cases outnumbered other participant groups, tended to be somewhat low after the outbreak of COVID-19. Analysis results of the detailed elements are shown in Table 6.