As educators we often find ourselves working with a student that just seems to not be able to retain information. This student may have previously been doing fine a month or two ago now it seems their abilities have vanished.
True Christian education ought to lead the learner to salvation and then to develop Christ-likeness.
I have had vision issues all my life and know regular visits to the eye doctor are essential. Did you know eighty percent of what a school-age child learns is through vision?