Joe Santos, Head of School
Joe manages daily operations at the school including admissions, fundraising, and strategic development. He received a BSc in Zoology from the University of Reading, a P.G.C.E from Christchurch College, Canterbury and an M.A. in Educational Management from the University of Bath. Joe Santos joined ISB in 2013, and he has served as Assistant Head of School and Director of Middle School. Prior to joining ISB, Joe worked in schools in Gibraltar, the UK, Mexico, China, Brazil, and Spain.

Richard Brownstone, Director of Middle School
Richard runs the daily operations of the Middle School, managing student life, curriculum implementation, and professional development.  He holds an M.A. in Education from Teachers College, Columbia University. He has over 20 years of experience as an educator in New York City. Richard joined ISB in 2018.

Natalie Stella Judelson, Director of Operations and Advancement
Natalie manages daily operations and the advancement work of the school including fundraising, marketing and outreach, and other strategic initiatives. Natalie holds a J.D. from Boston College Law School and a Professional Certificate in Fundraising from Heyman Center for Philanthropy and Fundraising at NYU. Natalie joined ISB in 2010.

Torsie Judkins, Director of Admissions
Torsie manages admissions and enrollment at ISB. Torsie holds a M.A. in Educational Leadership from Manhattanville College and a B.A. in Business Administration from North Carolina’s Wesleyan College. Torsie joined ISB in 2018.

Delphine Michaud, Director of Lower School
Delphine manages the daily life of the Lower School, overseeing faculty, professional development, student life and progress, curriculum implementation, and parent interactions. She holds an M.A. in Education from Bank Street College. Delphine joined ISB in 2007.

Rosa Torres, Director of Preschool
Rosa manages the daily life of the Preschool, overseeing faculty, professional development, student life and progress, curriculum implementation, and parent interactions. Rosa holds a B.A. in Early Childhood Education and is working on her M.A. in education at Hunter College. In 2011, she received a Blackboard Award for excellence in teaching. Rosa joined ISB in 2005.



Sandra Bueno, Events & Database Manager
Sandra holds a B.A. in Sociology from Queens College. Sandra joined ISB in 2010.

Danielle Valenti, Internal Communications Manager
Danielle holds a B.S. from Binghamton University. Danielle joined ISB in 2014.

Betsey Barnum, External Communications & Marketing Manager
Betsey holds a BGS from the University of Michigan. Betsey joined ISB in 2019



Jordan Genee, Technology Director
Jordan holds a B.A. in Communications from Temple University and a M.A. in Digital Media Design for Learning from New York University. Jordan joined ISB in 2019.

Pat Hough, Technology Integration Director
Pat holds a B.F.A. in Painting and Drawing from Temple University and has over 25 years of teaching experience in Technology and Art. Pat joined ISB in 2013.



Alan Sze, Controller
Alan holds a B.A. in Mathematics from the State University of New York Albany. Alan joined ISB in 2010.

Michelle Tran, Bookkeeper
Michelle holds a B.A. in Financial Accounting from Western Connecticut State University. Michelle joined ISB in 2015.

Karissa Nathan, Business Office Associate
Karissa holds a B.A. in English with a concentration in Business Writing from Lehman College. She also holds an M.A. in Post-Colonial Literature. Karissa joined ISB in 2018.



Corinne Djankale, Admissions Associate
Corinne holds a B.A. in Administration & Business Management from the University of Paris 2 Panthéon-Assas and an M.A. in Multimedia Communication from the University of Strasbourg. Corinne joined ISB in 2019.



Kali Gerber, School Nurse
Kali holds a B.S. in Nursing form the University of Minnesota. Kali joined ISB in 2018.

Dr. Elizabeth Helbraun, School Psychologist and Lower School Counselor
Liz holds a Psy.D. from New York University in Child/School Psychology and is a New York State licensed psychologist. Liz also has an M.S. in Early Childhood and Special Education from Bank Street College of Education. Liz joined ISB in 2010.



Kelly Hagen, Lower & Middle School Program Associate
Kelly holds a B.A. from Binghamton University. Kelly joined ISB in 2017.

Andrea Kientz, Assistant to the Head of School
Andrea holds a B.A. in German Literature & Culture from La Sorbonne Nouvelle University (Paris III). She also holds a trilingual Executive Assistant Diploma from Advancia-Paris Chamber of Commerce. Andrea joined ISB in 2013.

Kristen Moreland, Enrichment & Summer Programs Director
Kristen holds a B.A. in Russian and Linguistics from Grinnell College and a M.A. in International Education from New York University. Kristen joined ISB in 2018.



Eliot Osorio, Receptionist & Administrative Support
Chavelly Payero, Receptionist
Hector Castillo, Senior Facilities Associate
Jocsan Crespo, Facilities Associate
Marc Martinez, Facilities Associate


Statement of Non-Discrimination International School of Brooklyn admits students of any race, color, national and ethnic origin to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national and ethnic origin in administration of its educational policies, admissions policies, tuition assistance programs, and athletic and other school-administered programs.