Good Morning! I know that this could be a little late, but I’m wondering if you have ever had any luck with using an external keyboard or mouse instead? These could be linked via Bluetooth and you could get specific types and sizes that your students really like using – so they end up using them in the first place! I have assessed office workstations with bluetooth keyboards/mice linked to iPads, and these people tended to always use good overall postures. This is because they were able to use the iPad similar to like they would use a laptop, placing the iPad at a good eye level when working and then placing the keyboard/mouse at a neutral elbow height.
If your students really like using the iPad without these extensions, perhaps you can set it up that they would alternate between the two options. Perhaps this will increase the likelihood of better postures and reductions of hand flexion! Good luck!
Hi There! Have you tried tilting whatever document you are reading or working on by 20 degrees? I have found what really works if you get a two inch binder and position it so the tilt is away from you. You can then place the document on that and it should really increase the comfort for you – I know that it has for me!
Another comfort point is if you are writing on your work surface (like a desk), then change the height of your chair (if that is possible), so that your neutral elbow height is about 5 cm (2″) lower than your work surface. This will help to reduce bent forward back positions that can be linked to discomfort over time!
Hope this helps!