Program feasibility and adaptation to practice
Although Japanese schoolteachers are very busy, 168 of the 171 baseline participants remained in the study until the end. This may have been due to the short duration of the program (30 min) and the easy participation in the e-learning format, which was not restricted to any location and allowed them to choose their own locations. The length of the program was “long” (26 participants), “just right” (60 participants), and “short” (none). Therefore, although a shorter length would have been more desirable, the current one was considered acceptable. Thirty minutes would be sufficient to set up a training session with additional group work after watching the video. As mentioned in the open-ended text response section, it is sometimes difficult to solve problems unless they are shared and handled by the entire school. The need for an approach that involves the entire school has been pointed out in a previous study [