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. 

Michele ClaeysHead of School

Michele assumed the role of head of school on July 1, 2021. She brings a breadth of important leadership skills and experience to Langley – from founding arts education programs at two schools in Managua, Nicaragua, to understanding the needs of young learners as a third-grade teacher at Columbia Grammar and Preparatory School in Manhattan, to growing enrollment to 500+ students as a strategic, innovative, and growth-minded head of school at the Ross School in New York, to leading the middle school division with 240 students as associate head of school and head of middle school at the Norwood School in Bethesda. In her various roles, Michele has overseen the hiring, development, and supervision of faculty and staff, managed large operating budgets, led the high school placement process for eighth-graders, advanced curriculum and teaching with notable results, led diversity and equity initiatives, and built deep partnerships with a variety of constituencies, including trustees, parents, faculty, staff, and students. 

Michele holds an M.S. from Bank Street College of Education and a B.A. from the University of Michigan.

Sarah Beck, 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 before coming to Langley in 2017. 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.

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

Emily Dutton, Head of Middle School

Emily joined Langley in 2021, bringing nearly 15 years of both teaching and leadership experience at independent schools in New York and California. Most recently, she served as dean of students and as a member of the strategic leadership team at San Francisco's Drew School, where she was responsible for the academic and social-emotional experience of nearly 300 high school students. Emily started her career at Horace Mann School in New York, where she focused on the middle school years. During her nine years there, she served as a student activities coordinator, history teacher, advisor, and grade-level team leader. She also developed an inclusive student leadership model and helped create the department's scope and sequence.

Emily earned an M.A. and M.Ed. from Columbia University's Teacher's College and a B.A. from Hamilton College.

Ricki MarionHead of Development

A nonprofit professional with more than 16 years of development and special events experience, Ricki served as a development consultant for Langley for several years before joining the staff in 2021. Previously, she was director of development for The Washington Ballet, director of development and community relations for the Workhouse Arts Center, executive director of Bowen McCauley Dance, and assistant director of special events at the Wolf Trap Foundation for the Performing Arts. 

Ricki holds an M.S. and a B.F.A. from Shenandoah University and is a Certified Fund Raising Executive (CFRE).

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. 

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 Student Support & Social-Emotional Learning

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.

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

Brittany WestbrookDirector of Strategic Marketing & Communications

Brittany came to Langley in 2021 from the Columbus School for Girls in Ohio, where she directed and implemented the school’s internal and external marketing efforts, increased its brand recognition and thought leadership, and was deeply involved in developing its DEI programming. Previously, Brittany served as assistant director of public affairs/marketing and communications strategist at the Central Ohio Workforce Investment Corporation and as a reporter at several television stations in Ohio, Pennsylvania, and Illinois.

Brittany holds an M.S. from Franklin University and a B.S. from Northwestern University.


Leslie DixonDirector of Admission and Financial Aid

Leslie holds an MBA, Marymount University and a B.S., University of Evansville.


LaToya NeedhamDirector of Extended Day/ Enrichment & Diversity Coordinator

LaToya holds a B.A., George Mason University.


Margaret DwightDirector of Human Resources

Margaret holds a B.A., Hunter College.