does he really mean of the compulsory schools which Popes have condemned?

this is how far we've fallen, hipster Catholics endorsing the state's compulsory schooling regime, which was forbidden to Catholics by Canon law in the early 20th century https://twitter.com/theghissilent/status/1289715487467696134

Supporting secular teachers' unions is fundamentally against Catholic social teaching principles, @theghissilent. It was part of a commodification of education

Stay with me. There's a huge reason for this. Even beyond the Masonic stuff, the underlying principle is really obvious and shows how far we've fallen

teachers are not just ordinary laborers, especially those of compulsory schools

"All the reasons which have caused the Holy See to set its face against Catholic workers belonging to neutral or mixed Labor Unions apply with much greater force to neutral or mixed organisations of teachers."