A sacrament is an act that Jesus tells us to do in which a visible element (bread, wine, water, the pastor) is combined with the Word of God for the forgiveness of sins. A rite is a service of the church that, while not commanded, are usually beneficial for those involved. Rites include weddings, funerals, confirmation, the commendation of the dying, etc.
In the sacrament of Baptism water is united with God’s Word and serves as our entry into God’s kingdom.
Normally youth baptized in infancy are expected to attend classes their 7th and 8th grade years that will explore the basics of the Christian faith, primarily using the Bible and Martin Luther’s Small Catechism.