All students at STAHS belong to one of four Houses – Julian, Mandeville, Paris or Verulam. Each House is like a family, offering a strong sense of community and belonging. Students take part in inter-House competitions, charity events, and activities that build teamwork, leadership, and school spirit.

Julian House is named after Lady Juliana Berners who was the prioress at a priory in Sopwell in St Albans in the 15th century. Julian's symbol is the hawk in honour of her passion for hawking and other sports.

Mandeville House is named after the narrator in the book, The Travels of Sir John Mandeville, a knight from St Albans. Its symbol, the wyvern, reflects the book’s mythical creatures and the narrator’s spirit of adventure.

Paris House is named after Matthew of Paris, a 13th-century English monk from St Albans who wrote an ambitious world history. Its symbol, the fleur-de-lis, reflects both his surname and his mastery of French.

Verulam House is named after Francis Bacon, 1st Viscount St Alban — a 17th-century thinker known as the father of the scientific method. Its symbol, the lamp of wisdom, reflects Bacon’s pursuit of knowledge through observation and reason.