Catholic Textbooks to provide a true Catholic Education.
The Magisterium of the Church teaches:
"It is necessary not only that religious instruction be given to the young at certain fixed times, but also that every other subject taught, be permeated with Christian piety. If this is wanting, if this sacred atmosphere does not pervade and warm the hearts of masters and scholars alike, little good can be expected from any kind of learning, and considerable harm will often be the consequence."
Pope Leo XII encyclical Militantis Ecclesiae, August 1, 1897 reiterated by Pope Pius XI encyclical Divini Illius Magistri, December 31, 1929