avira
agreed, its Less than modern (meaning less than you view modern, and we all know how that is) .
Apolagies if I indicated that I was unsure on this point.
I have their brochure discouraging people attending the Siyum hashas. Sure there are deeper disagreements there regardi nghre Aguda, that are more historic than anything. But the bottom line is its pretty clear. So it is in writing, and of course I grew up next door (literally) to Satmerer chasidim
Again this is all a side issue. As you correctly note these arent all interchangeable, and going to a different school is not easy.
Is it very hard? (I think so, border line impossible), you want to argue iI’m exageraitng and it is s it only a little hard. Ok fine why should they have to make a hard change even if its a little hard to educate their kids in the way they (and the law) sees fit