Please enter these gym doors when coming to Confession

There are two doors on the north side of the gym that are marked with signage for confessionals 

Catechism of the Catholic Church paragraph 1461 is a good passage on learning the Church’s official teaching on Confession. 

“Since Christ entrusted to his apostles the ministry of reconciliation, 65 bishops who are their successors, and priests, the bishops’ collaborators, continue to exercise this ministry. Indeed bishops and priests, by virtue of the sacrament of Holy Orders, have the power to forgive all sins ‘in the name of the Father, and of the Son, and of the Holy Spirit.'” -Catechism of the Catholic Church #1461

Jesus said to them again, “Peace be with you. As the Father has sent me, even so I am sending you.” And when he had said this, he breathed on them and said to them, “Receive the Holy Spirit. If you forgive the sins of any, they are forgiven them; if you withhold forgiveness from any, it is withheld.”
John 20:21-32

All this is from God, who through Christ reconciled us to himself and gave us the ministry of reconciliation; ¹⁹ that is, in Christ God was reconciling^a]">[a] the world to himself, not counting their trespasses against them, and entrusting to us the message of reconciliation.
2 Corinthians 5:18.