Watch Netflix on the school device?

Can you watch Netflix at home with a school device you borrowed? In my case, this was not prohibited or restricted by the school. So is this allowed?

Do many, I think as long as you don't do any nonsense, that shouldn't be a problem what you do with the loaner

But only documentaries

I also downloaded Spotify etc from my device. Nothing should happen there

When I borrowed it, I was told that I could only use the tablet for school purposes and not for private purposes. So I'm not sure if it's really different anywhere else. I can only advise against it.