The American School in SwitzerlandThe American School in Switzerland

Board of Directors

In 2005, the TASIS Foundation Board changed the form of governance at the two TASIS Schools (TASIS Switzerland and TASIS England). The new governance structure created a Board of Directors at each School responsible for all aspects of the Schools’ operations with significant autonomy to direct the Schools’ activities, consistent with the broad but specific objectives of the TASIS Foundation.

Meetings are held three times a year on campus. This Board consists of TASIS alumni and professionals in the educational, legal, and business world.

Lynn Fleming Aeschliman '63

Chairman, TASIS Board of Directors
Vice-Chairman, TASIS Foundation Board
Founder, TASIS Elementary School 

Chairman, Board Campus Development Committee

Lynn Fleming Aeschliman ’63, Chairman, B.A. from Barnard College, Columbia University, is an alumna of TASIS and daughter of Founder Mary Crist Fleming. She has worked in many facets of the TASIS organization, managing its theater company, publications, films, and building projects on all of its campuses for many years. She served as Assistant Director of TASIS and Chairman of the TASIS Development Board before moving to Virginia, where she ran an architectural restoration firm and served as Director of an elementary school. She has supervised major architectural restoration projects in the USA, England (all the original buildings of the TASIS England campus), Italy, and Switzerland—the TASIS campus and now the rapidly-developing TASIS Global Village Master Plan, which extends until 2028—and has run summer camps in Switzerland and France and co-directed a residential college in Lausanne, Switzerland. Mrs. Aeschliman served as Executive Director of the TASIS organization from 1996–2005 and now serves on the TASIS Foundation Board and Chairman of the TASIS SA Board of Directors. Her two children graduated from TASIS. She is also the Founding Director of the TASIS Elementary School.

Learn more about Lynn Fleming Aeschliman and Dr. Michael Aeschliman.


Sara Rosso Cipolini

TASIS Parent
President, Planhotel Resorts and Hotels

Sara Rosso Cipolini was educated in Italy and Switzerland. After graduating from high school, she attended classes in Accounting, Financial Management, Hospitality Sales, and Marketing at Cornell University in Ithaca, NY. Between 1989 and 1997 she worked for Pantravel SA (a forerunner of Planhotel SA) and traveled widely, organizing and accompanying incentive groups all over the world.

Since 2008, Sara has been the President of Planhotel SA, a company for which she served as Managing Director from 1997-2007 and that specializes in resorts ownership, management, supervising, planning, and project development. This group now comprises 14 resorts, hotels, and spas in Kenya, Zanzibar, and the Maldives, with a new opening planned in Mozambique.

Sara and her husband Carlo have had two sons graduate from TASIS, and Sara has served as the Chair of the MS Parents Advisory Group (PAG).

Sara Rosso Cipolini


Marco Ornaghi

TASIS Parent
Real Estate Investor and Asset Manager
Chairman, TASIS Board of Directors Finance Committee

Marco Ornaghi was born in Italy. A Cum Laude Economics graduate of Bocconi University, Milan, he is an experienced real estate professional investor with a diversified background.

After graduating, Marco moved to London where he spent more than six years developing the international business of a large Italian printing and publishing company. During this period, Marco was head of a business unit that acquired and managed important accounts with some of the most relevant publishing houses in the US, the UK, Scandinavia, and Germany. He then moved back to Italy, in the year 2000, to join the general management of the same company. He later went on to advise various Italian businesses in the fields of business strategy, international development and marketing.

In 2004, he joined his wife Lorenza's family real estate business and together they started various initiatives in Italy, Switzerland, and in the UK with a specific focus on retail property developments and commercial property acquisitions. Marco also continued advising Italian and International groups in the fields of real estate investments, retail expansion, and asset management. A Swiss resident since 2012, he is now director of the Swiss branch of the family-owned real estate investment business with various property interests in Europe.

Marco and Lorenza have two sons who attended TASIS for many years.

Marco Ornaghi


Curtis McGraw Webster ’75

President, The Vertical Corporation
President, Curtis W. McGraw Foundation

Curtis McGraw Webster ’75 is a music producer and philanthropist in New York City. His music production facility, the Vertical Corporation, is a state-of-the-art recording studio which has played host to a wide range of musical artists, including one with whom he has had a charted U.K. and European hit. His work in the arts extends to theatre where Curtis has written original music and worked on sound design for productions in New York City and the Edinburgh Festival Fringe in Edinburgh, Scotland. Curtis is the President of the Curtis W. McGraw Foundation, overseeing the non-profit’s support of the arts, education, medical research, and social services, working with over a hundred groups annually. Of particular interest is HIV/AIDS outreach and research. He is also the Executive Vice-President of the Lisa McGraw Figure Skating Foundation which supports individual figure skaters and figure skating organizations in order to promote the art and sport of Figure Skating. A native of Princeton, New Jersey, he attended Princeton Day School, The Lawrenceville School, and The American School in Switzerland. Besides serving on the TASIS Board of Directors, Curtis supports TASIS outreach programs and has escorted TASIS students on humanitarian and learning travels amongst AIDS foster orphanages in Romania. Curtis also serves on the Boards of the Princeton Hospital Foundation, Patriots Theater in Trenton, NJ, and The Blue Curtain Foundation, a group for the support of young performers and new music.


Curtis McGraw Webster


Mathias Mühlhofer ’95

Secretary, TASIS Board of Directors
Lawyer and Real Estate Developer
TASIS Parent

Mathias Mühlhofer ’95 attended TASIS for six years and graduated as Valedictorian and recipient of the H. Miller Crist Award, the highest accolade awarded to a graduating student each spring. Additionally, Mathias was recognized as an International AP Scholar by the College Board for his outstanding achievement of posting an average score of more than 4.0 on 13 AP exams, and he was one of two international students flown to the United States to meet President Bill Clinton.

Mathias holds a Bachelor’s degree in International Business Administration and a Master’s degree in Law, both from the University of Vienna. In 2008 he co-founded a real estate development firm with a sizable property portfolio. In addition, Mathias continues to manage the family business that refurbishes turn-of-the-century residential buildings in Vienna. He has served as Legal Advisor and Management Assistant at CoCo Software and, while still a student, held the position of CFO of the Austrian Students’ Union at the University of Vienna, as well as fulfilling the role of Secretary General of the national student government party, AktionsGemeinschaft.

Mathias is married to Dr. Ulrike Mühlhofer, an orthopedic surgeon, and they have two daughters, Marie-Therese and Katharina, both of whom have attended the TASIS summer programs in Lugano.

Mathias Mühlhofer


Alexandra Heumann Wicki ’80

Vice-Chairman, TASIS Board of Directors 
Member, TASIS Foundation Board
Founder and Chairman, JHS Foundation

Alexandra Heumann Wicki ’80, born in Germany to an American father and a German mother, grew up in the Ticino, where she attended elementary school and later attended TASIS for six years. She was the first TASIS graduate to undertake the IB and received several TASIS awards, among them for the senior who best represents the ideals and goals of the school.

Alexandra then studied English Philology, English Literature, and Political Philosophy at the Université de Fribourg, followed by a performing arts curriculum at Lee Strasberg in New York City. During those years she worked in the field of the theater arts and spent numerous summers as a counselor at TASIS. Her last teaching position was with the European Film Actors School (EFAS) in Zurich, where she taught for nine years. In 2000, she started a Swiss humanitarian foundation that supports students in Africa, Asia, and the Middle East.

Alexandra and her husband Dr. Andreas Wicki live in Zurich. Their youngest daughter graduated this spring from Boston University, while their older daughter graduated from Princeton and their son from Stanford, all with honors. Alexandra has traveled extensively and is fluent in German, English, Italian, and French. She has been a member of the TASIS Board of Directors since its inception in 2005.

Alexandra Heumann Wicki


Lyle D. Rigg

Headmaster, TASIS Switzerland: 1982–84, 2007–2008, and 2015–2017 
Headmaster, TASIS England: 1984–98 and 2009–2010 
Member, TASIS England Board of Directors

Lyle Rigg, the longest-serving Headmaster in TASIS history, joined the TASIS Switzerland Board of Directors in November 2020. 

A product of Defiance, Ohio, Lyle earned a B.A. from Miami University (Ohio), an M.A. from West Texas A&M, and an Ed.M. from Harvard University. Following teaching stints in Ohio, El Salvador, and Brazil, he began his storied TASIS career in England in the fall of 1979, taking on the roles of Assistant Headmaster, Head of Residence, and History teacher. 

Three years later, TASIS Founder M. Crist Fleming asked Lyle to come to Switzerland to serve as Headmaster, a post he held for two academic years before returning to England in the fall of 1984, where he served as Headmaster until 1998. He then moved to the United States to lead the Pennington School in New Jersey until his initial retirement in 2006.

Mrs. Fleming coaxed Mr. Rigg out of retirement to serve as the Interim Headmaster at TASIS Switzerland for the 2007–2008 academic year, and this became something of a pattern. He left retirement again for the 2009–2010 school year to become Interim Headmaster in England. After stepping away for five years, he agreed to come out of retirement a third time in 2015 and served as Headmaster in Switzerland for two full academic years. 

To celebrate Mrs. Fleming's centenary in 2010—a year after she passed away—Lyle pored over her speeches, yearbook messages, private notes, and interviews and edited them into The Wit and Wisdom of Mary Crist Fleming, a memorial book full of charming, witty, and inspiring life lessons. Two years later, he was honored to learn that TASIS England had renamed its library the Lyle Rigg Upper School Library.

Lyle and his wife, award-winning children’s author Sharon Creech, currently reside in Camden, Maine, where they moved eight years ago to be closer to their children and grandchildren.