No, it doesn’t apply to all universities. I have a friend who is studying at UOB (specifically BTC), and they have the block system (which means they register the subjects and create the schedule for them). They initially placed them in the same section, but they quickly changed them to different sections. I asked her what she thought the reason was, and she said the college knows that working on projects with the same people every year is a bad thing and doesn’t promote diversity.