I, for one, have seen many, if not most second-generation traditional Catholics in my local SSPX chapel who don't understand the crisis and definitely will not pass on their Catholic Faith. There is no catechism class in the church, and nothing that teaches about the Crisis to the teenagers... they are the neglected group there.
How to keep the children Catholic??? ?
By one's own examples of sacrifice do you make an impression on your children. You can't necessarily worry about another persons kid if they are not in your imediate environment for you to be an example and teacher. If the school ain't teaching them, YOU teach your kids their Faith. If you can't put the time in:
Something I enjoyed visiting the Benedictine monastery in New Mexico was that they had some one read from a religious book while everyone was eating. Tgey would even take turns reading out loud. The Dominicans of Avrillé did the same at a retreat, and if made the meal more interesting. This is something I think families could also mimick for the better.
You could use any book; The Bible, the Catechism, lives of saint's, Church History, etc.