Twice now I've taken good text/procedural programmers and dumped them into LabVIEW's graphical blocks. Not because it's a better language to program the robot, or there are more jobs, or because it's easier.
Both of these natural coders "got" text-based line-by-line coding, but LabVIEW introduces them to a new way of thinking about "code". After 30 years programming it certainly opened my eyes wide.
Had it been the other way around, a student who started in LabVIEW and was proficient at it, I'd probably introduce Java or C++ to add that to their toolkit. I'm mean that way
I think a good employer will be more interested in a student with a varied experience than someone who knows but one language. These are high-school kids after all, who knows what direction they'll take from here, give them as many experiences as possible.