ST MARY'S School in Melrose welcomed a new headmaster and opened an estimated £1million extension in time for the start of term last month.
Harvey said: "I am very keen to see St Mary's develop and flourish as a very enticing option for those considering an independent prep school for their children. I am also eager to highlight that the school's door is very much open to anyone who is interested."
Mr Harvey is married to Marnie, from Canada, and the couple have two daughters, Mia (nine) and Ruby (six). Mrs Harvey will work alongside her husband in several roles.
Son of a Coldstream doctor, Mr Harvey attended St Mary's before going to George Watson's College in Edinburgh where he was in the school's first XV rugby and the first VI tennis teams.
He completed a 12-month outdoor education course in Aberdeen before going on to do a BEd honours in physical education (PE) at John Moores University in Liverpool. From there he taught PE in the state secondary sector in Widnes, going on to head the PE department at Malton School in North Yorkshire.
St Mary's school also opened its new state-of-the-art Hamilton Building, estimated to have cost 1million, for the top three years' pupils in July.
A school spokesperson said: "All the classrooms, offices, meeting and study rooms, and reception area are equipped with the latest technology and will offer a spacious, well lit and comfortable environment for children and staff.
"The project has been funded in full by a most generous donation from a charitable trust who want to support the work of St Mary's School."
The building has been named after John Hamilton, who started St Mary's on its current site in Abbey Park in 1895.
Former pupils of the school include rugby internationalists John Jeffrey - who, it was announced this week, is to join the International Rugby Board as a Scotland representative - former captain Mike Biggar and Roger Baird, plus the present Duke of Buccleuch, Border Union Show secretary Ron Wilson, MD for St Boswells auctioneers John Swan Ltd, Jack Clark, and former Scotland cricket captain, Richard Swan.