"I can see why the Legionaries do/did not want parents involving themselves in class reviews of the content of religious education."
The Second Vatican Council, as well as encyclicals by Pope John Paul II and the pre-Vatican II popes all state that parents are the primary teachers of their children. In fact, so important is this duty, that it is "nearly impossible" to dedicate completely this task to others.
It sounds like the Legion of Christ, who also allow minors to "incorporate" into their movement without parents' consent, is in violation of Catholic teaching, and of common sense regarding a parents natural right to "delegating" responsibility of teaching of their children.
i think some open houses,parent/teacher conferences,reading the children's text books and questioning children on what they are learning should be sufficient.
Look at how we like-minded Freepers can misunderstand each other and can hassle for weeks,months and years over some thing that is quite nonessential. And these are Freepers who claim to be orthodox,conservative,traditional Catholics. My sympathies lie with any order or parish that is trying to teach Truth in these perilous times,we don't have the luxury of interminable discussions,sometimes we have to pray and trust.
However,I would insist on knowing the exact content of any classes they would be presenting on sex education,other than that I would try to avoid interference.Catholic schools did a magnificent job of educating students for centuries,I think it correlates with teaching Truth and praying a lot.
*Amen, brother. Too few know this