Our People

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.

Nadia has more than 10 years of international experience across management, employee engagement, employee relations, compensation analysis, talent acquisition, and onboarding roles. Before joining The Langley School, she was a global human resources manager with an international energy consulting firm, where she oversaw the HR strategy and direction for U.S. and field operations. Throughout her career in different parts of the world, Nadia has established a track record of success by leveraging a collaborative leadership style to accomplish many of her short- and long-range objectives promoting the human capital as the most valuable asset for any organization. She is an active SHRM-SCP certified HR professional who is fluent in English, French, and Arabic and proficient in Spanish.

Nadia received her MBA in finance from George Mason University, a B.A. in marketing from ISCAE, Casablanca, Morocco, and a certificate in human resources management from George Mason University.

Debbie has spent the past eight years working in admissions and advancement at Barnesville School of Arts & Sciences in upper Montgomery County, MD, supporting and then leading the school’s admissions, advancement, and marketing efforts. She is looking forward to bringing her commitment to independent school education to Langley’s admission team.

Debbie earned her J.D. from Boston University School of Law and a B.A. from Rutgers University, Camden College of Arts & Sciences.

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.

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).

LaToya joined the Langley community in 2012. Over the last 10 years, she has run the extended day (Club E.D.) program, the enrichment program, Leopard Cubs, and the satellite school for faculty and staff, and recently stepped into the role of diversity, equity, and inclusion coordinator. Prior to coming to Langley, LaToya spent a year working for the AmeriCorps program, City Year. She also taught in the fifth-grade classroom at DC Scholars Stanton Elementary in Southeast DC. While there, she served as the community engagement coordinator and on the ambassador board that frequently met with DC politicians and leaders to discuss the state of the public school system.

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

Anna came to Langley in 2019 from Ingenuity Prep in Washington, DC, where she served as a principal, instructional leadership coach, and founding master teacher. During her time there, she built a successful preK3 and preK4 program for more than 120 students, focusing on social-emotional learning and high-quality early literacy and math instruction. Anna began her teaching career in Honduras and has also taught early childhood classes in Sweden and Washington, DC. She was a DC Teacher of the Year nominee in 2011 and a Washington Post Principal of the Year finalist in 2016.

Anna earned an M.S. from Johns Hopkins University and a B.S. from Davidson College.

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 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.

I-Min Chao is the co-founder of edHelper. Previously, she was marketing system manager at US Airways. I-Min immigrated to the United States after completing her undergraduate degree in transportation management at Tamkang University in Taiwan.

She received her M.B.A. from Babcock Graduate School of Management at Wake Forest University. I-Min enjoys volunteering at Langley and served as Langley’s PALS chair during the 2017-2018 school year.

Ariana DiMeo joined the Langley family in 2018 as an avid parent-volunteer. She is a senior career public servant in interagency intelligence strategy development and policy negotiation. Her career assignments span the U.S. government, including committees in the House and Senate, Federal District Court, and multiple Cabinet-level departments and agencies. Ariana’s commendations include Presidential Management Fellow, Partnership for Public Service Excellence in Government Senior Fellow, Graduate School USA Senior Leader, National Intelligence University subject-matter and community leadership certificates, and the Intelligence Integration Unit Citation.

Ariana earned her BA in government and religion, summa cum laude, Phi Beta Kappa, Presidential Medal, from Sweet Briar College. She earned her AM in political ethics and biblical law from the University of Chicago Divinity School, and her business certificates from Yale University School of Management and the London School of Economics and Political Science. Ariana earned her JD, Order of Barristers, from Tulane University Law School, and her LLM in dispute resolution from Pepperdine University Caruso School of Law.

John Gilliland is currently a stay-at-home dad. A retired U.S. Navy Supply Corps officer, John served in the Navy for 22 years in a variety of capacities, to include as an officer onboard two San Diego-based ships and as liaisons to the Congress in both the Navy’s and the Office of the Secretary of Defense’s Offices of Legislative Affairs. After retiring from the Navy, he served as the deputy assistant secretary of defense for legislative affairs, the department’s and secretary’s most senior advisor for all matters related to the U.S. House of Representatives.

John graduated with a Bachelor of Science degree in business administration from Miami University (Oxford, OH) where he received his commission through the Naval ROTC program. He also earned a Master of Science degree with Distinction in contracting management from the Naval Postgraduate School. John sits on the board of the Miami University NROTC Alumni Organization.

David Halwig is a president and co-founder of IntelliVen, Inc., an executive services firm which helps leaders develop and align strategy to more fully realize enterprise value. Previously, he spent over 25 years with KPMG LLC and KPMG Consulting as a general partner and senior vice president - public sector, Latin America. David is a member of the Board of Trustees for St. Georges School in Newport, RI, where he chairs the Audit and Risk Management Committee. He is a past member of the Key Executive Board for Rensselaer Polytechnic Institute and a founding member of the Chief Risk Officer’s Council for George Mason University. He is an adjunct faculty member at George Mason, leading risk management program sessions, and is a frequent lecturer for the Archer Center for Leadership Development at Rensselaer Polytechnic Institute.

David earned a B.S. in management engineering from Rensselaer Polytechnic Institute.

Denise Haselhorst (Vice Chair and Treasurer) is the chief HR officer at Chargebee, a recurring billing and subscription management company that helps SaaS and SaaS-like businesses streamline revenue operations. In this role, she is responsible for all aspects of global human capital. Previously, Denise served as chief HR officer for Anthology and Blackboard. She drives the design and implementation of human capital solutions to positively impact leadership effectiveness, organizational performance, and employee engagement, all aimed at delivering business and financial results. Prior to joining Blackboard in 2004, Denise worked for American Management Systems and CGI, both global information technology professional services firms. Earlier in her career, she worked in both student affairs and residential life at the University of Michigan.

Denise holds an M.A. in human resource management from the Kogod School of Business at American University and a B.A in psychology from the University of Michigan.

Ruchi Jalla is a senior diversity, equity, and inclusion (DEI) leader with nearly two decades of experience in driving DEI capability and organizational change for major global enterprises, and was recently recognized as one of “North America’s Most Influential D&I Leaders” (Hive, 2020). As vice president, chief diversity and inclusion officer for BAE Systems Inc., she has positioned the organization at the forefront of diversity, equity, and inclusion, establishing it as a thought-leader and employer of choice, honored with multiple awards and top Equality Index rankings.

Ruchi holds a bachelor’s degree from the University of Western Ontario, GPHR and SHRM-SCP certifications, and previously served on the Virginia SHRM State Council and NOVA SHRM Board of Directors.

Joel Kanter (Trustee Emeritus) has served as president of Windy City, Inc., a privately held investment firm, since 1986. From 1995 to 1999, he was the chief executive officer and president of Walnut Financial Services, Inc., a publicly traded company.  Joel serves on the boards of several public and privately held healthcare companies as well as several non-educationally oriented not-for-profit organizations. He is currently chair of the board for the Black Student Fund and the Coalition to Stop Gun Violence.

Joel has a B.A. in political science and a B.S. in psychology from Tulane University.

Sara Magner (Chair) is an attorney with previous work experience focused on corporate and transactional work. She has been a member of the Board of Directors of Orvana Minerals Corp., a Toronto Stock Exchange-listed, multi-mine gold-copper producer with operations in Spain and Bolivia, since 2015 and currently serves as the chair of the Compensation, Nominating, and Corporate Governance Committee. From 2010-2019, Sara served as the corporate secretary and general counsel of Minera S.A. Previously, she was an associate in the corporate and securities practice at the global law firm, Greenberg Traurig LLP, and worked in various segments of Siemens’ Human Resources Department in the U.S. and Germany.

Sara holds a J.D. from George Washington University School of Law and an undergraduate degree from Emory University.

Alistair Miller (Secretary) leads imagery product and strategic partnerships at Mapbox, an open-source platform for building custom mapping applications. Alistair is an 18-year veteran of the mapping and satellite imaging industry, having previously served in product and strategy leadership roles at OmniEarth, SignalFrame, and Maxar. In 2017, he founded GeoCumulus, a strategic advisory firm specializing in the application of machine learning and computer vision.

Alistair studied geography at Mary Washington College.

Preston Miller is a principal of The Caruthers Cos., his family’s real estate development, management, and investment business. Since joining the company in 2001, Preston has been integral to the planning, operations, and development of Belmont Bay, a riverfront project in Woodbridge, VA. In his role as principal, he is responsible for the day-to-day oversight of the many aspects related to planning and executing the renovations and capital improvements to the family’s portfolio of maturing real estate assets, as well as focusing on other investment pursuits for the Caruthers family.

Preston graduated from James Madison University with a degree in finance and computer information systems, and earned an M.S. in real estate development from Johns Hopkins University.

Nicole Morrill is the head of development and construction for Ancora Partners, a real estate firm focused on innovation districts and the real estate needs of anchor institutions. She is an active member of the Urban Land Institute and its Women’s Leadership Initiative. For the past six years, Nicole has also served on the Greater McLean Chamber of Commerce and the McLean Planning Committee to help advance a vision for an evolving downtown McLean.

She holds a B.S. from the McIntire School of Commerce at the University of Virginia and an M.B.A. from the Fuqua School of Business at Duke University.

Lara Ramsey is a Northern Virginia native and an alumna of Langley. She serves part-time as a partner and general counsel for Acorn Capital, LC, a small real estate investment company. Lara formerly practiced insurance litigation before leaving law for education. She spent five years running leadership programs for high school students and several years working as a part-time school counselor in Arlington Public Schools.

Lara earned a B.A. at the University of North Carolina at Chapel Hill, a J.D. at the University of Virginia, and an M.Ed. at the George Washington University.

Dane Smith is a founding member of Invictus Capital Partners; an alternative asset manager focused on real estate credit. At Invictus, Dane is a member of both the Management and Investment Committees and is responsible for identifying and sourcing new investment opportunities and overseeing portfolio management activities. He is also the President of Verus Mortgage Capital, Invictus’ affiliated operating company that sources, diligences, finances, and acquires investments for Invictus managed investment funds. Dane is responsible for the management of all Verus business units, including Credit, Operations, Capital Markets, Finance, and Sales.

Dane received a B.E., magna cum laude, from Vanderbilt University, with dual majors in Chemical Engineering and Mathematics.

Miguel Toledo is a chief investment officer at the International Finance Corporation (private sector arm of the World Bank), leading IFC’s transport infrastructure practice across Latin America. Previously, Mr. Toledo was heading IFC’s infrastructure and energy team in Bogota (Colombia) for 6 years, covering the Andean region, Central America and the Caribbean. During his 25-year career, including 16 years at IFC, Mr. Toledo has led numerous energy and infrastructure transactions globally. Prior to IFC, Mr Toledo worked at CAF, Citigroup and BBVA bank.

Mr. Toledo holds a bachelor degree in civil engineering from the Universidad de los Andes in Bogota and an MBA from McGill University.

Andrea Weinstein is an attorney and currently serving as Vice President of Federal Regulatory Affairs for Entergy Corporation. Entergy Corporation is an integrated energy company engaged in electric power production, transmission, and retail distribution operations. Entergy delivers electricity to 3 million utility customers in Arkansas, Louisiana, Mississippi, and Texas. Entergy owns and operates one of the cleanest large-scale U.S. power generating fleets with approximately 30,000 megawatts of electric generating capacity, including 8,000 megawatts of nuclear power. Headquartered in New Orleans, Louisiana, Entergy has annual revenues of $10 billion and more than 13,000 employees. Andrea has held this position since 2014 and is responsible for developing policies and implementing regulatory strategies at the federal level. She originally joined Entergy as senior regulatory counsel in March 2004. Before joining Entergy, Andrea was an associate at the law firm of Morgan, Lewis; Bockius, LLP in Washington, DC. From 1998-2000, she was employed as an Attorney-Advisor by the Federal Energy Regulatory Commission in the Office of General Counsel.

Andrea graduated from Washington University in St. Louis and received a Juris Doctorate degree from American University, Washington College of Law.

Shireen Zaman is a program officer with the BUILD program at the Ford Foundation where she is focused on working with leading social justice organizations to equip them with the strategic clarity, people, knowledge, and resources they need to achieve impact and advance systems change over the course of years and decades. Shireen has more than two decades of experience in the philanthropic and nonprofit sector, spearheading organizational transformation, resource development, and program management. In 2013, she was recognized as a White House "Champion of Change" for her work as an Asian-American woman leader.

She holds a B.A. in human development from Boston College and an M.A. from the School of International Service at American University.