Very few would ever be published without a significant number of labs able to routinely achieve comparable performance.
I really hope these were just Masters level students, because at least they could get the benefit of the doubt that it was coursework or something.
If it's PhDs, I feel so sorry for them: a major part of the degree is learning to communicate research. Without publications, there is no proof they can do research or communicate it.
On the other hand, after having gotten through a couple of publications, a couple of seminars and at least one peer review process, the thesis becomes almost just a formality. Since by then you've already had plenty of experience writing, dealing with criticism, and presenting your work to experts.