In the educational context the word "student" is being replaced by "learner" in many instances.
At least in English this is true.
I have an advanced degree in Education from a UK uni and the term "learner" is all over modern educational parlance and in the professional literature. Here in the States it is likewise a common term to refer to students. Yet the obvious benefit of the term "learner" is that we are all "learners" and encouraged to continue to be so in our striving to better ourselves.
The term student is overloaded with Theocratic baggage when it shows up in WT literature, as WFB mentioned earlier. When the WTs show over-saturation of a term, it's really using a mind control mechanism. Repeated exposure will desensitize the reader. Like with a lie, if repeated often enough, people start believing it. Well, the term learner is something the WT obviously wants to incorporate into it's cult jargon.