85 Let it be loudly proclaimed and well understood and recognized by all, that Catholics, no matter what their nationality, in agitating for Catholic schools for their children, are not mixing in party politics, but are engaged in a religious enterprise demanded by conscience. They do not intend to separate their children either from the body of the nation or its spirit, but to educate them in a perfect manner, most conducive to the prosperity of the nation. Indeed a good Catholic, precisely because of his Catholic principles, makes the better citizen, attached to his country, and loyally submissive to constituted civil authority in every legitimate form of government.
Source: Divini Illius Magistri (Vatican.va)