Its the teachers. I have family that teaches part time; they says there’s a major online Jewish education forum, most of the teachers are M.O., and more than 1/2 hate Trump and “barely support” Israel.
Remember what happened with Ramaz when Rabbi Lookstein was going to give the opening prayer at the RNC convention where Trump would be formally made the candidate. 1/2 of the students and many alumni went berserk and created petitions to stop it, threatening to pull donations. Rabbi Lookstein backed down.
If you don’t monitor what is being taught in your kids schools (and fight back against bolshivicker teachers, your kids are going to get brainwashed by the Left.