Something that stood out and set this school apart to me was the timetable and how it worked well with my circadian rhythm. Changing the timetable will be a negative change and remove what makes this school better than others.
As a VCE student who already struggles with attendance and grades due to health issues, this change is concerning. These constant changes in timetable for not only VCE students but the rest of the years is stressful and disorientating for minimal affect in attendance of well being sessions. The student response is telling you that this will mostly affect student's wellbeing negatively, whether for sleep, change, health, or attendance reasons, which cannot be properly counteracted by brief wellbeing and communities sessions efforts. Look into how to make wellbeing sessions more helpful and why people aren't attending in the first place instead of making this unreasonably large adjustment.