Da, maybe im wrong about teaneck – i remember when a beis medrash opened up about 14 years ago, run by lakewood rabbanim…it wasn’t there to change the community necessarily, just another “garden state parkway” yeshiva. But i had friends who went there and told me about the state of yiddishkeit in the environs.
I looked up some schools…it appears that until 8th grade, most schools are mixed, which goes way beyond what rav moshe allowed – these kids are past puberty and are going to be very different than kids who are raised bekedushah.
One school, yavneh, teaches “varsity cheerleading” to 3rd graders and puts on a performance of alice in wonderland, as per their website. Tell me, is this a Torah chinuch?