At Riverdale, we have a robust faculty, staff, and administration so that we can meet the needs of our students and their families. If you need to reach someone at School, we have put this webpage together to help.
All School Administration
Kari Ostrem
Head of School
Hanifa Barnes
Assistant Head of School for Strategy & Operations
Jenna King
Associate Head of School for External Affairs
Milton Sipp
Assistant Head of School
for School Life;
Head of Middle School
James Duval
Associate Head of School;
Head of Lower School
Anna Hall
Chief of Organizational Learning
Lower School Administrative Team
James Duval
Associate Head of School;
Head of Lower School
Natasha Schmemann
Assistant Head of Lower School, Pre-K-Grade 2
Ellen Greengrass
Assistant Head of Lower School, Grades 3-5
Jessica Delgado
Associate Head of Lower School
Tim Sacks
Lower School Dean
Demetra Caldwell
Lower School Director of Community Engagement
Frances Garcia
Assistant to the Head of Lower School
Barry Sherman
Lower School Administrative Assistant
Middle School Administrative Team
Milton Sipp
Assistant Head of School
for School Life;
Head of Middle School
Mike Sclafani
Assistant Head of Middle School
Dean of Students for Grade 8
Monika Le
Dean of Students for Grade 7
Antoinette Quarshie
Dean of Students for Grade 6
Monique Fonseca
Assistant to the Head of School and the Middle School Deans
Upper School Administration Team
Mike Velez
Head of Upper School
Julie Choi
Assistant Head of Upper School
Shelby Stokes
Dean of Faculty
Jennie Picconi
Dean of Students, Grade 9
Jeremy Clifford
Dean of Students, Grade 10
Manisha Doran
Assistant Dean of Students, Grade 10
Meg Johnson
Dean of Students, Grade 11
Johnny Hager
Dean of Students, Grade 12
Yana Polikarpov
Assistant to Head of Upper School;
Global Studies Assistant
James Murray
Assistant to the Upper School Deans
Academic Department Chairs
Andrew Abate
Computer Science Department Chair
Melissa Miness
English Department Chair
Christina Young
Director of Counseling & Health Education;
Health Department Chair
Laura Honsberger
History Department Chair
Deborah Aschkenes
Interdisciplinary Studies Coordinator
Valerie Keller
Language Department Chair
Missi Decker-Alifanz
Math Department Chair
Jason Curry
Music Department Chair
Roberta MacIvor
Physical Education Department Chair
Shabari Lasrado
Science Department Chair
Laura Desmond
Theater, Dance & Film Department Chair
Jason Ruff
Visual Arts Department Chair
Athletics
Katie Gendron
Assistant Director of Athletics for Coaching and Operations
John Pizzi
Director of Athletics
Mike Powers
Director for Athletic Training and Safety and Student Welfare
DEIB on the Hill (Middle & Upper School)
Phyllis Dugan
Director of Diversity Equity Inclusion and Belonging
Ciara Everett
Assistant Director of Community Engagement
External Affairs
Jenna King
Associate Head of School for External Affairs
Maia Shulman
Director of Lower School Admission
Tracy Dansker
Director of Middle and Upper School Admission
JP Jacquet
Director of Financial Aid;
Assistant Director of Middle and Upper School Admission
Pamela Ezell
Chief Communications Officer
Chloë May
Assistant Director of Communications
Finance
Dan Schultz
Chief Financial Officer
Learning Research Team
Jenny Buck
Co-Director of the
Learning Research Team
Candy Anderson
Co-Director of the
Learning Research Team
Middle & Upper School Counseling
Christina Young
Director of Counseling & Health Education;
Health Department Chair
Parents Association
Tiffany Ellis-Butts
President of Parents Association
School Store
Frances Aybar
School Store Manager;
Purchasing/ Receiving Agent
Security & Facilities
Service Learning
Rachel Klein
Director of Service Learning
Technology
Jonathan King
Director of Technology
Jen Davenport
Associate Director of Administrative Systems
Transportation
Marcia Siper
Lower School Transportation & Attendance
Eula Manning
Middle & Upper School Transportation
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Chinese (Simplified)
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French
German
Italian
Portuguese
Russian
Spanish