Even homeschooling your kids isn’t enough. The deranged, degraded culture is all around and will seep into your kids lives as deadly poison. It will take massive work to both inoculate your kids against this poison as well as shield them from the more aggressive propaganda. This first of all means banning t.v., internet and other social media sources from the home, except in the most filtered forms.
Actually, to keep your children safe, it is necessary to create our own society, a cultural group in which our kids grow up. In most cases, this is the Church, if a particular church group has not already been seduced by the media monster. Otherwise, it is a very tall order.
How many stories of homeschooled and private Christian schooled children are out there where the children STILL went to the dark side? I personally know several.
As parents, all we can do is our best. Nothing is guaranteed.