Dr. Peggy Pelonis was raised in Los Angeles, California. She earned a Doctorate degree in Education from the University of Bath, UK, an M.Sc. degree in Counseling and School Psychology from California State University, Fullerton (where she also received two awards for Outstanding Student and Outstanding Research), an Executive M.B.A. from the University of Indianapolis and a B.S. in English Literature and Psychology from the American College of Greece.

Dr. Pelonis is a Licensed Psychotherapist and holds School Counseling Certification from the State of California. As well, she is a National Certified Psychologist and holds a diploma in Clinical Hypnosis. Dr. Pelonis was on the staff of Cal State University Fullerton as well as the University of LaVerne teaching in the Master’s Psychology program, she was on the staff of the Adlerian Training Institute, USA and is currently on the staff of ICASSI (International Committee of Adlerian Summer Schools and Institutes). She is Chair of the Special Interest Group of the European Collaborative for International Schools (ECIS) and works with Middle States Association (MSA) as a team member for school accreditation.

An active leadership and personal and professional growth coach and trainer and a trainer of school leadership and transformation, Dr. Pelonis conducts workshops in Europe, the Middle East and the USA. She was founder of ISOS Counseling and Educational Center and continues to conduct workshops and groups on Change and is a frequent lecturer at conferences as well as an invited speaker on various TV and radio programs. Her work on Coping with Change, Resilience as well as on Leadership in Education and Educational Transformation has been cited in journals, magazines and books. She is the author of numerous journal articles, book chapters and magazine & newspaper articles, as well as two books: "Change in the journey of life" Fytraki publications Athens, 2001 and "Yparho Allazo" I Exist, I Change) Isorropon publications, Athens 2006. Her Doctoral work involved international schools from around the world examining the views of Heads of Schools and Principals regarding professional development in such schools.

email: pelonisp@acs.gr

Steve Kakaris started employment at ACS Athens in 2002 as Business Manager. Currently holds the position of Director of Finance, Human Resources and Facilities.

His business career started in USA, where he worked for 21 years at different companies in the private sector. His experience was in the areas of public accounting, manufacturing and financial management.

Mr. Kakaris undergraduate studies were in Business Administration at the University of Piraeus and his Masters degree in Accounting from Roosevelt University in Chicago. He passed the Certified Public Accountant exams in Illinois.

Mr. Kakaris is married and has two kids who graduated from ACS Athens.

email: kakariss@acs.gr

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 on the Executive Board of the SCIS Conference (Sports Council of International Schools) and is the recipient of the “Women and Sport” Award by the International Olympic Committee.

email: constantinidesa@acs.gr

Helen Maravegias began her career at ACS Athens in November of 1980 in the Principal’s Office of the Academy. During that time, she enjoyed working with talented administrators, faculty, staff and students. In 1990 she assumed the position of Assistant to the President and has held this position since then.

Ms. Maravegias was educated in the United States and has her degree from the Berkeley School of Business in New York City. Her work skills and ethics have guided her throughout her years at ACS Athens with great success.

Ms. Maravegias is married and has two daughters, both graduates of ACS Athens.

email: maravegiash@acs.gr

John Papadakis is the Director of Enrollment Management, Technology & Communications at ACS Athens since 2006 and the school's certified Data Protection Officer since 2018. 

After 14 years in the United States, where he served American K-12 education in different capacities as a Math teacher, tutor, and administrator, he returned to Greece with his family.

He received his DPO certification from TÜV Austria in 2018. His academic studies include an Executive M.B.A. degree from the University of Indianapolis (Athens Campus), a B.A. in Communications/Electronic Media/Broadcasting from Columbia College Chicago, and an associate degree in electronics engineering from Triton College, IL. He has extensive experience in radio/TV production and has worked as an editor/staff writer in weekly ethnic newspapers based in Chicago, IL. Mr. Papadakis was the Director of Communications of the Council of Hellenes Abroad (SAE) – North and South America Region, based in Chicago, from 1995-2001, covering and promoting the educational, civic and cultural activities of the ethnic Greek community on the American continent.

Personal business ventures include: a TV satellite company operating as a Dish Network dealer and distributor of Greek satellite TV channels in the Midwest; a weekly radio program promoting the activities of the Greek American community; and various business technology and communication consulting services to organizations and businesses in the Chicagoland area. After his arrival to Athens in 2001, he was involved in technology projects as a training consultant and as a project manager in new media related projects (e-commerce, online Content Management Systems, web 2.0, etc.).

email: papadakisj@acs.gr