Leadership Team

Every day, The Langley School’s leaders apply their passion and expertise to shaping the exceptional Langley experience for our students and families. We’re proud and honored to introduce you to our leadership team:

Dr. Elinor Scully, Head of School

A nationally recognized expert in childhood and adolescent development, Elinor came to us from the National Cathedral School in Washington, DC, where she served as assistant head of school, director of the Upper School, and then associate head of school before becoming head of The Langley School in July 2013. She began her career in 1991 as a family life education teacher at St. Stephen’s & St. Agnes School in Alexandria, VA, subsequently taking positions as chair of the Family Life Education Department and associate director of the Upper School before moving to NCS in 2005.

Throughout her career, Elinor's work has focused intensively on curriculum development, multicultural and sexuality education, parent education, creating an intentionally nurturing school climate, and building leadership within the faculty, staff, and student body. She has consulted with more than 40 independent schools and written for numerous publications on the topics of gender, sexuality education, and social and emotional learning. She currently serves as president of the Elementary School Heads Association and on the Virginia Association of Independent Schools Board of Directors.

Elinor holds a Ph.D. and M.S. in education from the University of Pennsylvania and a B.A. from the University of Virginia.

Sarah Beck, Interim Head of Lower School/Director of Curriculum & Instruction

Sarah joined Langley in 2019 from Glasgow Middle School in Fairfax County, where she served as both a history teacher and an administrator. In her roles as social and emotional learning coordinator, academic dean, assistant principal, and director of student services, Sarah revised Glasgow’s vision in collaboration with staff, designed a school-wide social and emotional learning curriculum, launched a positive behavior management program, and enhanced the capacity of teachers through professional development and evaluation programs.

In recognition of her contributions to the field of education, she was selected as the Bailey’s Crossroads Teacher of the Year in 2015 and the Fairfax County Public Schools Outstanding Leader of the Year in 2017.

Sarah earned an M.Ed. from The George Washington University, a B.A. from Stanford University, and a certificate in educational leadership and administration from The George Washington University. 

Greg Bokman, Chief Financial Officer

Greg is a CPA and brings 25 years of financial experience to Langley, having previously served as the chief financial officer at the Washington International School (WIS) for four years. Prior to WIS, Greg was the CFO for the Smithsonian Institution’s commercial organization and has also held financial roles at AOL, Black & Decker, and Deloitte.

He is active in youth sports in his community, coaching basketball and baseball and serving on the board of his local Little League organization. Greg and his wife spend their weekends cheering on their two sons at athletic events, spending time with family and friends, and squeezing in travel when time allows.

Greg received his B.S. from University of Maryland-College Park.

Nola-rae Cronan, Head of Middle School

Nola-rae came to Langley in 2019 with approximately 20 years of experience in nearly every area of independent school life. A dynamic and thoughtful leader, she is a strong advocate for innovative, inclusive school communities and student-centered leadership.

Nola-rae most recently served as director of middle school at the Columbus School for Girls in Ohio, where she oversaw the academic, social, and emotional growth of students in grades 6-8 and developed new curriculum and technology initiatives geared toward this age group. She also spent five years as dean of students at Cranbrook Kingwood Middle School for Girls in Michigan and nine years as director of diversity and student activities at The Williston Northampton School in Massachusetts. In addition, Nola-rae has received distinction for her work with innovative teaching practices after being selected as one of 26 educators in the first cohort of TED-Ed Innovate Educators.

She holds an M.A. in social work from the Smith College School for Social Work and a B.S. from Ursinus College.

Ayesha Flaherty, Head of Enrollment Management & Communications

Ayesha combines 20 years of experience in marketing and communications with a lifelong interest in education. She joined Langley in 2014 to lead admissions, communications, and digital efforts. Since then, her role has expanded to also oversee Langley's Summer Studio and after-school programs.

With an extensive background in change management, her work at Langley includes creating new ways to communicate with current parents and the broader community and influencing the current strategic plan. But her greatest joy comes from identifying and recruiting students who can truly thrive in Langley’s preschool through grade 8 program.

Born in England and with family spread across the globe, Ayesha shares a love of travel and international cuisine with her husband and two young sons.

She received her M.S. from Northwestern University in integrated marketing communications and her B.S. from the University of Virginia. She currently serves as a faculty member for the Enrollment Management Association's Admission Training Institute.

Phil Petru, Assistant Head of School/Head of Primary School

Phil joined The Langley School in 2015, after serving for four years as head of Cape Cod Academy in Osterville, MA. Previously, he served as principal of Memorial Middle School in Medford, NJ, and assistant principal of Carusi Middle School in Cherry Hill, NJ. He also taught social studies and coached soccer at Eastern Regional High School in Voorhees, NJ — and both teaching and coaching have remained lifelong priorities.

A renowned expert on curriculum development, Phil is a sought-after speaker on topics including service learning, strengthening student engagement, and shaping achievement through the school environment. His work at Langley focuses on ensuring rigor and relevance in the curriculum; developing new, student-centered courses promoting leadership, entrepreneurship, and other essential capacities for a global future; and helping build and maintain Langley’s exceptional faculty development programs.

Phil holds an M.S. in educational leadership from the University of Pennsylvania and a B.A. from Wake Forest University.

Dr. Sarah Sumwalt, Director of Social & Emotional Learning/Middle School Counselor

Sarah joined the Langley community in 2017 in the newly created role of director of social and emotional learning. While earning her Ph.D. in clinical psychology, her graduate research focused on friendships during early adolescence and specifically on the interplay between social and emotional well-being. Prior to working at Langley, she practiced as a child and adolescent psychologist at the Wake Kendall Group, PLLC in Washington, DC, and served as the director of learning services at the Lowell School.

In her free time, Sarah enjoys spending time with her husband, son, and two dogs, paddle-boarding on the Potomac River, and gardening. She is also a Pop Vinyl aficionado and has a collection of figurines in her office.

Sarah holds a Ph.D. from SUNY, University at Buffalo and a B.A. from the University of Virginia.