I’m still not quite sure what you mean by credit, perhaps you mean casually using the PIs name over the students in things like review articles and talks?

I’m an academic PI and when I was first getting started as an undergrad I had a falling out with a lab that had an abusive and toxic culture, and tried to publish some of my work without crediting me after I had graduated and left. I was able to contest the authorship and the journal actually changed the author list to properly credit me.