Many of our relationships are such special relationships. The pain and suffering that we ultimately must feel from these special relationships occur when these people let us down, as they must. Since no one can meet all our expectations, they inevitably fail our visions of what they should be. The ego conjures up how everyone else should behave. It specializes in failed special relationships.
Educational institutions have a tendency to cast people into molds.
We expect conformity and uniformity. We set up criteria by which to judge. The classroom can easily become the ego's den as we classify and pigeon-hole people. Teachers may have preconceived notions of how students should behave. We may judge them by their accomplishments or lack thereof.