At this point, I’m certain that teachers don’t know about full screen.
I find it easier to inform people about the hot key.
For those unaware you just hold down Alt and press F4.
Or double click into the picture.
They can’t!
As a teacher in luddite Germany: yes our smartboards still Run Windows Media Player + I need that bar visible so I’m able to stop the movie at the correct teachable scene.
(And before anyone suggests making a custom playlist with vlc and all those newfangled contraptions from around 2005: I don’t even have admin rights to change the sound volume…)
I’ve been in full corporate business leadership meetings where someone is sharing screen over zoom, but they have their PowerPoint windowed and one edge of it is slightly hanging off the side of the viewable screen.
What I’m saying is this sort of thing doesn’t go away after you finish school