the objectionable textbook material the ads refer to a controversy in wheaton schools in the early s surrounding a series of textbooks called impressions they also contained some writings that some parents believed featured themes of the occult witchcraft violence and disrespect for parental authority ' here is a discussion of one of the offending pieces a yarn called a wart snake in a fig tree which is a kind of a pardody of 'the twelve days of christmas' but with creepy crawlies and spiders and snakes and stuff a wart snake in a fig tree i wonder what roskam's stance on harry potter and holloween is