What is the barometer for a good student and a teacher?

Teachers who teach with the salary paid to them in their minds, and students who learn with the jobs they may procure as their focus are both pursuing wrong paths. In fact, the task of the teacher is to discharge his duty of instructing and inspiring the students so that they develop their latent talents and advance in the perfection of their skills. The task of the student is to unfold the Divine in him and equip himself for serving society with his skill and knowledge.