Interesting quote from Pius XI on the subject of state-imposed curricula in Catholic schools leading to the neglect of classical Catholic education:
"We often think and fear that there is in store for our young the damage already pointed out by St. Augustine: necessaria non norunt, quia superflua didicerunt ["They do not know the necessary things, because they have learned the superfluous."].
(Letter to Cardinal Gasparri, May 30, 1929. Papal Teachings: Education, p. 200)

An inspiring address of Pius XII on obedience in modern youth and parental authority:
"Fathers and mothers today often bewail the fact that they can no longer get their children to obey them: stubborn little children listen to nobody; growing children spurn all guidance; young men and women are exasperated by any advice given, are deaf to all warnings and insist on following their own ideas because they are convinced that they alone are fully in a position to appreciate the exigencies of the modern way of life. Their only ambition is to make a name for themselves on the sports field. In short, the new generation (of course, with many wonderful exceptions!) is ordinarily not disposed to submit to the authority of father and mother. And what is the cause of this insubordination? The reason generally given is that the children of today no longer possess the sense of submission and respect due to the commands of their parents. The heady fumes of youthful vanity which they breathe tend to extinguish in them all reverence for their parents. Everything they perceive around them serves the sole purpose of increasing, exciting and setting fire to their natural, untamed passion for independence, for mocking the past and thirsting avidly for the future...
"The normal exercising of authority depends not only on those who have to obey, but also, and in large measure, on those who have to command...We must distinguish between the right to possess authority and give orders, on the one hand, and, on the other, that moral excellence which is the essence and spirit of an effective, operative and efficacious authority which is able to impose itself on others and to exact obedience...Now, the right to command your children will not be worth much if it is not accompanied by that control and personal authority over them which ensures that they really obey you. But how and in what way can you acquire, preserve and strengthen this moral dominion?
"To temper authority with kindness is to triumph in the struggle which belongs to your duty as parents...
"But how are you going to rule over your children, when you do not know how to conquer your moods, to control your imagination and to dominate yourselves?...
"Avoid everything that may lessen your authority with them. Beware against ruining this authority by a non-stop series of recommendations and criticisms, which only serve to annoy them; they will go in one ear and out the other...Take care also that no sign of disagreement between you appear, in the way of treating your children: they will soon seize upon it to use the mother's authority against the father's and vice versa, and will not easily resist the urge to exploit such a situation. Do not, finally, make the mistake of waiting till your children are grown up in order to make them feel the calm weight of your authority, which must also be firm and frank, and not prone to tears or caprice...
"Your authority must be devoid of weakness, yet it must be an authority which stems from love and is seeped in and sustained by love. You should be the first instructors and first friends of your children. If you really have this parental love (a love, namely, which is Christian through and through, and not a more or less subconscious self-complacency) in the commands you give your children, these commands will find an echo in the intimate depths of the hearts of your children, without there being need to say very much. The language of love is more eloquent in the silence of labor than in much speech. A thousand little signs, an inflection of the voice, an almost imperceptible gesture, an expression of the face, a little hint of approval -- all these tell them, more than any protestations, how much affection there is in the prohibition that annoys them, how much kindness is hidden in the order they find troublesome. Then only will authority appear to them, not as a heavy weight, a hateful yoke to be cast off at the earliest possible opportunity, but as the supreme manifestation of your love.
"Must not example go hand in hand with love? How can children, who, after all, are naturally inclined to imitate, learn to obey, if they see the mother paying no heed to the orders of the father or worse, quarreling with him; if the home is full of continual criticism of all forms of authority; if they see that their parents are the first no to obey the commands of God and the Church?...
"This vision of a treasure of words and deeds, of encouragement and advice, of the practices of religion and virtue, will always remain fixed in thier minds and hearts, a moving and beloved memory which will recall you to them in times of doubt and uncertainty between good and evil, in danger and victory. In times of darkness, when even the heavens seem obscured, your examples will light up and lead the way, the way you have already traveled with that effort and labor which is the price of happiness here below.
"Is this perhaps only a dream? No. The life you are about to begin with your new family is no dream. It is a road along which you walk, invested with a dignity and authority that is designed to be a school and a novitiate for those of your own blood who follow.
"May the Heavenly Father, Who, in calling you to participate in the grandeur of His paternity, has communicated to you his authority, grant you the grace to exercise this authority with His wisdom and love!"
(Pius XII, address to newly-weds, Sept. 24, 1941, Papal Teachings: Education, pp. 310-315. Emphasis added by Fr. Gabriel Lavery, CMRI)