Senior Leadership Team

Andrea Greystoke, High Mistress

Born and raised in New York and San Francisco, Andrea was educated at Radcliffe College, Harvard University, The University of California at Berkeley and King’s College, London where she pursued undergraduate and graduate studies in Mathematics. Having married a British subject, Andrew Greystoke, in 1970, she has lived in London ever since apart from a five year stint in Manhattan due to Andrew’s professional commitments.

Andrea became the first woman teacher at St. Paul’s Boys’ School and subsequently in the same capacity at King’s College School in London.  She left teaching to have her (6!) children – all of whose names begin with an “A” -- but returned to education with the foundation of Abercorn School in 1987. In September 2006 she started its sister school in New York, the British International School of New York, located on 23rd Street and the East River.
As you may gather, Andrea loves children!

Paul Mason, Head of Prep

Paul Mason is currently Headmaster of the Preparatory School and was formerly Head of the Junior School at Manor Lodge. He was Head of PE and Games at Chesham Preparatory School earlier in his career and before that he was a class teacher at an Independent School on Jersey in the Channel Islands. His outside interests include playing and coaching rugby, playing the guitar and going on skiing holidays.

Francesca Wrottesley, Head of Pre-Prep

Francesca was awarded a Montessori Diploma in July 1987 and she began her teaching career in the nursery at Abercorn School when it opened that September.  In 1988 she left for a year to start a new nursery in The Hampshire School's Bayswater branch. She later returned to Abercorn to teach in Pre Reception. Over the past years she has taught in both the Reception and the Year 1 classes.  Francesca has been Head of Pre-Prep for about 10 years and in September 2006, she took on the role of Marketing Director as well.

Karalyn Dillon, Deputy Head TOGS

Karalyn was born in Scotland and came to London to go to university and then train as a teacher. Her first appointment, as an infant teacher, took her back up north to Carlisle in Cumbria. Whilst in Cumbria and Newcastle she was Head of an Infant Department. After leaving Cumbria, she went to San Francisco for two years. On her return she taught in the Special Needs Department of the London Oratory School, was the Maths Coordinator at the Marist Covenent and Science Coordinator at St. Cristina's School. Karalyn joined Abercorn orginally in 1987 as Head of the Infant School but left to look after her four children.She returned to Abercorn in 2003 where she was Director of Studies and has been in the post of Deputy Head for the last 2 years.

Kirsteen Jack, Director of Studies/Deputy Head WP

Having originally trained in Scotland, Kirsteen moved to London in 1995, where she took up post as a Year 4 teacher in a large junior school. After two years, she joined a small independent school in South East London, where she taught Years 2-4, in addition to having the responsibility of Mathematics coordinator and finally Acting Deputy Head. She joined Abercorn in 2005 as Head of Mathematics and has been in the post of Director of Studies for the last two years.