Comment Remember your turnover (Score 2) 383
Keep in mind that as a university you are going to have a much larger turnover than a standard organisation, so their strategies may not be suitable for you.
I would suggest that using any combination of First Name and Last Name will give you a pretty large amount of collisions, either with current users, or with past users. Collisions with past users may not seem like a huge problem until you get a ton of new users asking you why their accounts filled up with donkey porn spam on the first day.
Of course you could do something like including their first year in the account, i.e. joe.bloggs.2013@uni.edu. But it's probably just easier to use the username (as long as that is unique of course)