I never understood why religious people would teach in public schools.
Public schools are full of pritzus, immorality, foul language/nivul peh, and ideals against torah abound, whether it be sex ed, evilution, homosexuality, trannies, etc. These non-Jewish kids don’t want to be taught by frum Jews. And by the same token, it’s kind of hypocritical to teach in schools you wouldn’t send your own kids to.