the number is your course number! not the number of people on it but if the college was big enough i'm sure our esteemend management would get as many as possible in!!
I was on course 88, way back in 93. Gonzo was on ........ (i'm sure he'll say!)
the courses did get regraded a few years back when the college was restructured (again!!), i can't remember how many got missed out but the course numbers jumped from 13x something to 200
ps Gonzo, my previous log-on got mysteriously blocked