Using uBO, but have noticed a slightly longer delay of a few seconds between hitting play and the video starting, but I can deal with that over being forced to watch 30s of ads.

They are updating the app at some point, which is removing the watch together feature. I wonder what else may disappear.

I feel for the teacher, Windows is still the predominant OS that is used by businesses worldwide and it’s unlikely to change any time soon. Ensuring the kids have some familiarity with it is important as when a lot of them go into the workplace their employer isn’t going to give them a choice of OS to use. A number of schools in my country now provide kids with Windows laptops that can be managed through group policies. I can imagine the teacher feeling frustrated at times as their teaching material will be geared to Windows and may face challenges in being able to grade your kid.

It’s great you have given your kid experience in using Linux and that should set them up really well to working in a Linux based environment. Hopefully one day other OS will be added to teacher’s curriculum so that all kids have the opportunity to get hands on experience.