There’s something troubling happening in our schools. In art class, my children have been instructed to make Black Lives Matter posters. Assemblies in recent years have been a dreary parade of presentations on sexuality, identity and race politics. They have been subjected to workshops involving LGBTQI+ flash cards and printouts of tweets about transgenderism, and taught that Sam Smith – who is obviously overweight and wears provocative bondage clothing – is a shining example of ‘body positivity.