Catechists journey with their charges as teacher and companions. They teach the beliefs and traditions of the Catholic Church, along with their parents, of course. This is an awesome responsibility. It is not something that can be done in two hours a month or even four hours a month. It requires a commitment beyond just a few hours in a classroom.
The catechist should be an example, in prayer life, behavior and piety. We all fail sometimes to follow in the footsteps of Christ, but even in this, the example in the reception of the sacrament of Reconciliation should be there.