Ms. Constantinides was born in Cairo, Egypt. She earned a Bachelor of Education in Physical Education and French Language at McGill University; she received an M.A. in Exercise Physiology from the same institution, an M.Sc. in Sports Administration from Louisville University and an MBA from University of Indianapolis.
Ms. Constantinides is an ACS Athens Alumnus (class of '79) and returned to ACS Athens as a Middle School Physical Education teacher in 1986. She holds the position of Athletic Director since 1998.
Ms. Constantinides was the event manager in a number of International Sports projects, such as the McDonalds Classic in Paris, the NBA Jam Tour in Greece, the NBA 3 x 3 tour in Greece. In addition, she has worked in the Sydney 2000 Olympics, was the Venue and Competition Manager for Softball in the Athens 2004 Olympics and was the appointed Technical Delegate for Softball in the 2008 Beijing Olympics, as well as the venue and sport manager for the Special Olympics that took place in Athens in July 2011. She was the Assistant Technical Delegate of the World Summer Special Olympic Games of 2015 in the sport of softball.
She was a member of the ISST Executive Board from 2006-09, a member of the International Softball Federation Executive Board from 2008-09, is presently the Vice-Chair of the ISAA conference (International Schools Athletics Association), and is the recipient of the “Women and Sport” Award by the International Olympic Committee.
Valia Efstathiou was born and raised in Athens, Greece. She holds a Bachelor Degree in Business Administration with concentration in Marketing Communications from the American College of Greece and a Master's Degree in Sports Marketing and Communication from Ca' Foscari University of Venice and Euroleague Basketball. She has been with the Athletic Department since 2007 and is involved in all aspects of tournament and events organization.
She has also been the JV/Varsity Girls Volleyball and JV Girls Basketball coach for numerous years. On another note, she has a strong interest in digital photography and has recently completed an Advanced Certificate in Web Design with concentration in Digital Photography from Sessions College for Professional Design.
Mr. Babis Mamas holds a BSc (Honors) in Sports Science & Physical Education from the Aristotle University of Thessaloniki, an MBA from The Open University Business School (UK), and currently undertaking an MA in Education Leadership from the Open University (UK).
Babis has always been passionate about sports and the fields of education and management. He started his teaching career as a Physical Education teacher in Greek public schools, but after a few years, he was mesmerized by the business industry and changed directions. Sports have always been Mr. Mamas' passion, and alongside working and studying, he competed at the U18 and U21 Greek Track & Field team for Long and Triple Jump, and at a later age, he was introduced to Volleyball. Volleyball also turned into a career as he coached professionally at teams in Athens (Panathinaikos, Panionios) and later in the UK.
Moving into the UK turned to be a life-changing experience as Mr. Mamas discovered the fantastic world of International Schools and the plethora of administration roles that can combine education and management/leadership with the addition of sports at a high level. He quickly climbed the ranks to a position of leadership that included all the elements that synthesize a dream job for him and found particular interest in Pastoral Care. Mr. Mamas initiated significant projects that transformed and enhanced the school's co-curricular provision while being a board member in the school's Health & Safety, Safeguarding, and Academic Strategy teams. As part of the training required for his role, Mr. Mamas acquired Level 2 qualifications in the following fields:
Health & Safety in Education, Mental Wellbeing in Children and Young People, Keep Children Safe In Education (KCSIE) framework from the UK Department of Education and Child Protection in International Schools.
Mr. Mamas is very excited about being part of ACS Athens' vibrant community.