Student or Learner
Here is another word I heard from one of our "famous teachers" recollect.
According to a "LONGMAN" dictionary it says "old -fashioned". Could I say recall?
I would say that you are correct regarding the formality of recollect. It seems to me that we hear it mostly in TV courtroom dramas, e.g., "Sir, can you recollect the argument that occurred in your apartment shortly before your wifeīs murder?"