Anticipate the feelings and needs of the potential leader. Give encouragement - a handshake, high five, or pat on the back. A leader who is willing to take responsibility for his actions and be honest and transparent with his people is someone they will admire, respect, and trust. Time is valuable, but time spent with a potential leader is an investment. Examinations merely gauge progress.
Expectations promote progress.
Praise a person every time you see improvement. Hope is one of the greatest gifts leaders can give to those around them. Hope lifts morale. It improves self-image. It reenergizes people.