{{Infobox school | name = John Lyon School | image = File:School Crest.png | caption = | image_size = | coordinates = | motto = ("May the fortune of the house stand") | established = 1876 | closed = | type = Public School Private Day School | religion = | president = | head_label = Head | head = Katherine Haynes | r_head_label = Deputy Head | r_head = Andy Sims | chair_label = Chairman of Governors | chair = Giles Goodfellow | founders = The Governors of Harrow School | specialist = | address = Middle Road | city = Harrow on the Hill | county = Greater London | country = England | postcode = HA2 0HN | local_authority = London Borough of Harrow | urn = 102247 | dfeno = 310/6002 | ofsted = | staff = 150 (approx.) | enrolment = 600 (approx.) | gender = Unisex | lower_age = 11 | upper_age = 18 | houses = Butler Moore Norwood Vaughan | colours = Blue & Red | publication = The Standard', 'Sporting Lyons' | free_label_1 = Former pupils | free_1 = Old Lyonians | free_label_2 = Badges | free_2 = Rampant Lion Crossed Arrows | free_label_3 = | free_3 = | website = https://www.johnlyon.org/ }} John Lyon School (formerly The Lower School of John Lyon) is an academically selective private boys and girls' day school in Harrow on the Hill, Greater London, England. The school was founded in 1876, by the Governors of Harrow School for the education of local boys, in keeping with the belated wishes of John Lyon, Harrow School's founder. The school is a successor to the 'English Form' established in 1853, to educate local scholars. The John Lyon School still maintains its historic ties with Harrow School, and the two schools are closely partnered. The school is a member of the Headmasters' and Headmistresses' Conference (HMC). Structure and curriculum The governing body of Harrow School retains some control of the John Lyon School; most responsibilities, however, are delegated to a John Lyon board of governors (officially styled Committee of Management''). A number of Harrow governors serve on this committee, alongside co-opted governors. Unlike many previous governing bodies in British schools, there is no academic staff involvement in overall school government. The John Lyon School is divided into three age sections: Oldfield – Years 7 and 8 Upper School –