[browsingonly]

SSNs have been used as student IDs by particularly stupid educational institutions. The 'nice' thing about getting SSNs from students is the likelihood they'll live for a long time after the breach and thus be subject to identity theft for many years to come.

[SoftTalker]

This was common years (decades, really) ago but I'd be surprised if any university today was still doing that. I guess there could still be some....

[kelnos]

My university stopped putting SSNs on student IDs more than 25 years ago. I'd be surprised if there are many who still do that.

Though I wouldn't be surprised if some 40 year old university IT system requires its use as an identifier, regardless of whether or not it gets printed anywhere.