There isn’t. Except to imply this is a BY thing. Which it isn’t. You could have said my daughter’s school, some of my daughter’s teachers. You chose to stick it in as a swear word, not different at all as what you accuse. I’m sorry you can’t see that.
Having said that, i am sorry the specific staff/school treated you that way. There is no excuse for it.
Additionally, Modern is not a swear word, but modern orthodoxy has done damage to yiddishkeit and being offended by that isn’t right. I never liked that either, and some feel wrongly that they can put their heart into insulting anyone affiliated with it, but they are also wrong. But that doesn’t make the abbreviated version right. It’s not for you to stand where you are and decide only they are wrong. We all have what to fix.