When Professor George Hill, principal of St Mary's College in St Andrews (the divinity College of the University), died it was Haldane who succeeded him as principal of St Mary's College and professor of theology on 21 September 1820.
Kapag Professor George Hill, punong-guro ng St Mary's College sa St Andrews (ang diyos ng College sa University), namatay ito ay Haldane na Tagumpay sa kanya bilang punong-guro ng St Mary's College at propesor ng teolohiya sa 21 Setyembre 1820.