it really depends on the story. In a leadership example you should:
- Be in charge of leading a group (if you are not the leader of the group but – say – just part of a team, your example would be an example for teamwork, not leadership)
- Have to face a challenging situation
- Be responsible for the results of the group to overcome the situation
If your teaching example satisfies the previous points, then yes, it could be a good example.