[1] After assisting at Wakefield grammar school, Lupton was appointed, in 1859, second classical master in the City of London School, then in Milk Street, Cheapside; among his pupils there were Henry Palin Gurney and James Smith Reid.
Ordained deacon in 1859 and priest in 1860, he served as curate at St. Paul's Church, Avenue Road, N.W., and afterwards to W. Sparrow Simpson, rector of St Matthew Friday Street.
He remained sur-master for 35 years, the high masters being Herbert Kynaston and then Frederick William Walker.
in 1896 with a dissertation on Archbishop William Wake's Project of Union between the Gallican and Anglican Churches (1717–1720).
He published for the first time the following works of Colet (with a translation and introduction, except for the first):[1] There followed, in 1883, a translation of the letters of Desiderius Erasmus to Jodocus Jonas (1519), containing the lives of Jehan Vitrier, warden of the Franciscan convent at St. Omer, and of Colet.
[1] After his retirement in 1899 the Lupton prize (for a knowledge of the Bible and Book of Common Prayer) was founded to commemorate at St Paul's School.