Interesting. But yeah, maybe they don’t do this anymore.
This seems to be common for Quebec universities and colleges. My student number at the Université de Sherbrooke starts with ‘07’, since I was admitted in 2007, while my student number from college starts with ‘98’ (but I don’t remember the rest of that one). And I’m currently doing a distance education program at another Quebec university, where my student number starts with ‘20’, which I’ve just noticed is almost certainly because I started in 2020.
Not the case for the University of Ottawa, though. My student number there is a seven-digit number starting with ‘23’. Most of my colleagues when I was a student there also had student numbers in that range, so I assume they issue them in increasing order. Some students who’d been there a long time had a student number only six digits long. By the end of my time at the University of Ottawa, I’d started seeing students with a student number starting with a ‘3’ and maybe even with a ‘4’. I assume they issue a number to everybody who applies, but I’m not sure the numbers are consecutive: I’m not convinced there can be a million applicants at the University of Ottawa within a period of a few years.
As for writing one’s student number on all one’s work, I don’t ask this from my students, but I teach small classes. I did request it from my students at one of my previous jobs, after I had two students with the exact same name in one of my classes.
They may have changed systems. Back when I attended university, Ontario at least had an integrated system for university applications, so everyone was assigned an application number, which as I said was based on the year. At least some schools just re-used your application number as your student number once you were accepted, which is what my school did.