I dunno about uni or anything more 'serious', but I did this a decent bit in hs to let me sidestep the parental/student control bullshit and let me play games while the box I was using was 'offline'. Helps that I was far and away the smartest kid in the room for tech, and so I'd often aid teachers and they'd look the other way when I finished my assignment in 15 minutes and proceeded to do whatever I wanted for the remaining 75. In computer hardware class, I ran a minecraft server for others to join. In business and finance, played tanks, tower defense, and other 2D multi-player games with others in my row. In both drivers ed and physical ed, I'd play racing games on my laptop; because there was no internet in either location, I'd hotspot my phone. I remember another student I was friends with bringing their laptop and playing WoW on my hotspot as well.

Good times.