As To Teaching Our Confessions (2)

"Under the heading of formal catecheties I treated the methods and means of teaching catechism. Here attention must be called first of all to the division into classes. In the nature of the case this division must first and chiefly figure with the different ages of the catechumens. These ages are readily divided into three, namely: the age of children from six to twelve years; the age of early adolescence, from thirteen to sixteen; and the age of later adolescence or of young people of sixteen...