Regular and frequent confession is a powerful incentive to holiness and the finest possible preparation for fruitful Holy Communions. In every sacrament, it is Christ who acts. We only cooperate with Him, following His lead. If a child is old enough to be aware that he has committed a fault, surely he is old enough to admit the fault to God through His priest, apologize, and promise to behave in the future. God then takes that simple childish act of faith, trust, and regret and works miracles of grace with it through the sacrament in the child's mind and soul.
Every sacrament uses trifles to produce miracles.
He produces the Eucharist, Himself, the guarantee of our eternal life. Then you may guess what really goes on when a child goes to confession. It is free, but a donation to defray expenses will be welcome. Archbishop Stafford here merely echoes frequent instructions on these subjects from Rome.