the faculty's historic obligations to the Church of England, the foundation of Nonconformist and Roman Catholic institutions in Oxford from the late 19th century onwards, alongside changing academic and ecclesiastical attitudes towards theological study, resulted in the gradual transformation of theology from a purely professional discipline into an aspect of humanistic study. During the 20th century, Oxford established itself as an internationally significant centre of theological study with important contributions from S. R. Driver, William Sanday, C. H. Turner, B. H. Streeter, N. P. Williams, R. H. Lightfoot, G. R. Driver, Austin Farrer, Maurice Wiles, Henry Chadwick, James Barr and Arthur Peacocke. Although the department has, more recently, introduced examination papers in modern systematic theology, world religions and even separate postgraduate master's degrees in the study of religion, the Final Honour School of Theology remains primarily focused on biblical and historical study. Each undergraduate devotes at least half of his or her degree to the study of the Old Testament, New Testament, the development of Christian doctrine to AD 451 and modern Christian doctrine. Candidates can then choose four further papers from a wide selection of topics in biblical studies, history, doctrine and world religions. Professors Statutory professorships The following statutory professorships are held in conjunction with a canonry of Christ Church: the professor must be ordained in priest’s orders in the Church of England or in an Anglican church in communion with the Church of England, or eligible for and prepared to accept ordination. Regius Professor of Divinity - The Reverend Canon Graham Ward Lady Margaret Professor of Divinity - Canon Carol Harrison Regius Professor of Moral and Pastoral Theology - The Reverend Canon Nigel Biggar The following statutory professorship is held in conjunction with a canonry of Christ Church: the professor must be ordained in priest’s orders in the Church of England or in an episcopal church in communion with the Church of England, or eligible for and prepared to accept ordination; alternatively, in accordance the Church of England (Miscellaneous Provisions) Measure 1995 §2, the professorship may be held in conjunction with a lay canonry: the professor must be a lay member of the Church of England, or of any church in communion with it, or a minister or lay member of a church not in communion with the Church of England provided he or she is a suitably qualified member of one of the churches to which