Our Leadership
Board of Trustees
Gulliver Prep’s Board of Trustees is a group of individuals who volunteer their time to offer their unique talents and experiences to ensure the school’s success. The board has primary responsibility for Gulliver Prep’s long-term strategic planning, for advancing its mission, and for carrying out its fiduciary responsibilities.
- Cassey Plantada Morales P ‘27 ‘29, Chair
- Lee S. Millstein P ‘27 ‘29 ‘37 ‘37, Vice Chair
- Guilherme Valle P ‘28 ‘30, Treasurer
- Fabio Ribeiro P ‘27 ‘28, Secretary
- Anant Bhalla P ‘34 ‘36
- Gavin Beekman P ‘31 ‘35
- Scott Davidson ‘86 P ‘20 ‘26
- Christopher Drew P ‘31
- Benjamin Gettler P ‘25 ‘27 ‘34
- Eion Hu P ‘30 ‘30
- Philip Lee P ‘34
- Donald MacKenzie P ‘29 ‘31
- Ann Olazabal P ‘21 ‘23
- Sergio Rhein Schirato P ‘28 ‘32
- Kris Siemionow P ‘30 ‘33
- Vincent Signorello P ‘21
- Michalis Stavrinides P ‘21 ‘22 ‘24
- John C. Sumberg
- Jocelyn Woolworth P ‘19
- Leila Zivkovic P ‘28 ‘29
Senior Leadership

Simon Hess
President
Joined Gulliver Prep in 2024. M.B.A., Northwestern University; M.A., Planning and Social Policy, Harvard University; B.A., College of the Holy Cross

Dr. Tom Milaschewski
Head of School
Joined Gulliver Prep in 2026. Ed.D., Educational Leadership, Harvard University; Ed.M., School Leadership, Harvard University; Ed.M., Teaching and Curriculum, Boston University; B.A.; Spanish and International Studies, Colby College
Shivani Joshi
Chief Advancement Officer
Joined Gulliver Prep in 2024.
B.B.A. Marketing, University of Miami
Aime Martinez
Chief Financial & Operations Officer
Joined Gulliver Prep in 2025.
M.A.C.C. Accounting, Florida International University; B.A.C.C. Accounting, Florida International University; C.P.A.
Michele Seid
Chief People Officer
Joined Gulliver Prep in 2019. B.S., Business Management and Communications, Adelphi University
Principals
Rachel Griffin
Primary & Lower School Principal
Joined Gulliver Prep in 2017. M.S., Early Childhood and Elementary Education, Bank Street College of Education; M.A., Private School Leadership, Columbia University Teachers College; B.A., French, College of the Holy Cross
Elizabeth M. Scott
Middle School Principal
Joined Gulliver Prep in 2016. M.S., Private School Leadership, Columbia University Teachers College; B.A., History, Dartmouth College
Michelle Diaz
Upper School Principal
Joined Gulliver Prep in 2008. Ed.M., Education, Harvard University; B.A., Astrogeophysics, Colgate University
Administration
Maegan Azpiazu
Director of Brand Marketing & Creative Communications
Joined Gulliver Prep in 2016. M.S., Recreation and Sport Management, Florida International University; B.A., Communications/Journalism, The Pennsylvania State University
Bernadette Condesso
Upper School Director of School & College Counseling
Joined Gulliver Prep in 2023. M.A.T, Secondary Education, Social Studies, SUNY New Paltz; M.A., Near Eastern Studies, New York University; B.A., History, St. Peter’s College
Elen Castellanos
Director of Enrollment Management
Joined Gulliver Prep in 2008. M.S., Educational Leadership, Nova Southeastern University; B.A., Elementary Education, Florida International University
Don Lawrence
Director of Belonging & Community
Joined Gulliver Prep in 2021. M.Ed. Student Affairs, Azusa Pacific University; B.A., Bible, Houghton College
Michelle Nieto
Director of Educational Technology & Information Services
Joined Gulliver Prep in 2008. B.S., Information Technology, Barry University; Minor, Business Administration
Vivian Pacheco
Director of Operations & Risk Management
Joined Gulliver Prep in 2012. M. Ed. Private School Leadership, Barry University; B.A. Mathematics, University of Miami
Dr. Ana M. Pazos
Director of Curriculum Assessment & Support Services
Joined Gulliver Prep in 2009. Ph.D., Special Education, Kent State University; M.S.Ed., Special Education, University of Miami; B.A., Communications, Boston College
Alejandro Rodriguez
Chief Technology Officer
Joined Gulliver Prep in 2018. B.A., Criminology, University of Miami
Melissa Sullivan
Director of Community & Student Life
Joined Gulliver Prep in 2002. M.S., Educational Leadership, Nova Southeastern University; B.S., Health Science, University of Massachusetts
Andre Torres
Director of Athletics
Joined Gulliver Prep in 2022. B.S. in Business Administration, Nova Southeastern University; Certified Athletic Administrator (CAA)
Frank Steel
Head of School Emeritus
Joined Gulliver Prep in 2014. M.A., History, University of Pennsylvania; B.A., American Studies, Yale University



















