`  == Salem Witches' Institute ==  DarkMark.com is not a reliable source for verification on whether this is a school or not. According to Salem witch trials: ``In the fourth book of the Harry Potter series, Harry Potter and the Goblet of Fire, a group of 'middle-aged American witches' are observed by Harry as sitting under a banner reading 'The Salem Witch's Institute' at the Quidditch World Cup. This is a probable reference to the Salem trials.`` If the witches were middle-aged, they would hardly be at school; the reference itself seems to be more of a pun on Women's Institute. Either way, without confirmation either within the books or from the author, whether Salem Witches' Institute is a school or not is purely speculation, even if the speculation is linked back to a fan website such as DarkMark.com.  I'm moving Salem Witches' Institute from the schools sublist to the main list.  `