LSG teachers are extraordinary. Faculty members are intellectually curious and highly capable, and they are here because they want to help students learn deeply and be successful in, and long after, college.

Sylvia Israel, JD



Sylvia received her Juris Doctorate degree from New England School of Law and is a member of the Connecticut Bar. She graduated magna cum laude from Manhattan College with a BS degree in Economics. In 2008, Sylvia completed certification requirements to become a family mediation specialist in the areas of divorce, elder care and post divorce parenting issues.

For more than 15 years, Sylvia has been an advocate for children with exceptional academic abilities. Her work with students and their families draws on her extensive knowledge and familiarity with homeschool, Montessori, and private and public school curriculums. She has been a facilitator for the needs of students who require supplemental academic material and differentiated learning techniques. Her passion for academic and personal growth extends to re-educating parents in the methods that will best help their children maximize their learning potential.

Dr. Kevin Oliveau

Assistant Director


Kevin received both a B.S. in Computer Science and a Ph.D. in Political Science from the Massachusetts Institute of Technology. As an undergraduate, he worked on graphic displays at the Media Lab and built a computer game machine using only an oscilloscope and TTL logic gates. In graduate school, he researched armored warfare in World War II and analyzed the economic reforms implemented after the 1968 military coup in Peru.  His dissertation explored the military uses of space.  While pursuing his doctorate, Kevin was also written up in Scientific American for running large-scale Prisoner’s Dilemma games using computers networked together. 

Kevin’s distinguished professional background reflects a robust and interdisciplinary intellectual curiosity.  He has worked as a micro-coder at Thinking Machines, a super computer manufacturer, where he was awarded a patent for using floating-point chip support hardware to route messages between 65,000 processors.  He was the fifth employee hired at WAIS Inc., one of the first companies to create searchable websites, which was bought by America Online (AOL). At AOL, he managed software development for web caching, which, at the time, delivered a majority of residential web pages viewed on the Internet. He founded Lifeline Games, a short-lived online computer game company using dial-up modems. And he founded and built Catoctin Creek Village, a cohousing subdivision in Northern Virginia.  (He holds a Class-A Builder’s License).

Kevin is “seriously into” global politics, war gaming, movies, history, philosophy, technology, comic books, and economics. His purpose in life, as he sees it, is to try to learn how everything works. Teaching at the Loudoun School allows him to share his love of learning. He also gets a tremendous boost from the energy and enthusiasm the students bring to the classroom. When a student corrects him, or shows him something he doesn’t know, he’s thrilled.  

Maureen McCrae


Maureen first joined Loudoun School for the Gifted in 2008 to help out with her son Scott's field trips. Maureen made herself so indispensible, that Loudoun School brought her on full time as our Operations Manager/Mentor/Student Advocate in 2011. Maureen is also the founder and owner of G-Force Gymnastics Training Center in Ashburn, Virginia.

She is most proud of the work she has done at the Loudoun School. She works closely with students outside the classroom, creating informal opportunities for kids to develop interpersonal skills, grit, self-awareness, poise, and confidence. From unplanned Slurpee runs to conflict resolution sessions to one-on-one talks in her office, Maureen orchestrates an adult-led social community that preserves students’ humanity and cultivates their problem solving and self-advocacy. She measures her success on the individual level: to have even one kid truly believe in himself is so rewarding to her.


Ms. Carmen Carraway

Department Chair, Foreign Language

Carmen earned a B.A. in French and Economics with a minor in Art History, and then an M.S. in French Studies, from the University of Virginia. Carmen first envisioned herself as a teacher while studying and living in Aix-en-Provence as an undergraduate. Prior to her work at the Loudoun School, Carmen taught French for three years in Richmond, and received two teaching honors in that time.

Carmen is a lifelong learner. She has recently become deeply interested in Senegalese films that depict the economic and cultural legacies of French colonialism in African countries. She loves applying her multidisciplinary knowledge to her French lessons by making connections to global commerce, political history, and the fine arts.

As a teacher, Carmen is most passionate about creating vibrant classroom environments where students feel safe to take risks with language and are inspired to explore their own academic questions. She finds her greatest professional joy in helping her students to identify their innate and unique giftedness. 

Dr. Dan Clinton



Dan received his B.A. in English literature from the University of Chicago and his Ph.D. from the University of California, Berkeley, where he specialized in nineteenth-century American literature. From 2013-15, he was a Mellon Post-Doctoral Fellow in the English Department at Rutgers, and afterward he was a lecturer in their writing program.

His research has focused on the relationship between literature and mass media, particularly the way that writers reacted to the emergence of photography. His interests include media theory, book history, romanticism, formalism, the works of Herman Melville, comic books, film, and radio drama. His work has appeared in J19: The Journal of Nineteenth-Century Americanists and Nineteenth-Century Literature. He is committed to teaching literature with an interdisciplinary focus, so that students are encouraged to trace the connections between literature, history, philosophy, popular culture, and the arts.

Ms. Sarah Derr

Department Chair, English

Sarah received dual B.A.s in German Studies and English from Guilford College, where she was a member of the school’s selective Honors Scholarship Program. After teaching soldiers overseas at a U.S. Military base in Germany, she returned to Northern Virginia, where she went on to receive her M.A. in Secondary Education from George Mason University.

Sarah worked in Arlington Public Schools for six years, first as a summer school and substitute teacher during graduate school, and then as a high school English teacher. She taught a variety of English courses, including AP Language and Composition (for which she is College Board certified) as well as special education-integrated courses. She served as the school’s yearbook advisor for four years, and was chosen by her English colleagues to represent them as Department Chair during her final two years at the school.

After a five-year hiatus in which she stayed home with her young children, Sarah chose to return to teaching only after visiting LSG and meeting its students and staff. Sarah sees the combination of warmth and rigor at LSG as a complement to her own teaching, which seeks to blend student choice and high standards.

Ms. Ashley Gam



Ashley received her M.S. from The University of Georgia and B.A. from Oberlin College in Biology. As a biologist, she has worked on numerous studies involving avian stress physiology, behavioral ecology, and population demography. She is a member of the Sigma Xi Research Society; her graduate work earned the Cooper Ornithological Society Student Grant Award, and she has since published her research in a peer-reviewed academic journal. She maintains a Virginia Postgraduate Teaching License.

During her summers in college, she worked for the National Forest Service on a Northern Spotted Owl Demography study. This involved a lot of hooting, hiking, and not getting lost in the dark.  She also captured, banded, and took blood samples from spotted owls. 

Working in research also exposed her to teaching. Ashley worked as a teaching assistant for three years in both marine and avian physiology undergraduate teaching labs. Prior to her work at the Loudoun School, she also taught math and biology at an independent secondary school in Georgia.  

A calling to bring the excitement of research, evolution, and biology to students led her to the classroom. Her educational objective is to actively engage all students in the process of doing science, both inside and outside the classroom. In particular, citizen science data collection and local conservation projects offer exciting possibilities for students to apply what they’ve learned in ways that impact their communities. 

Dr. Michael Hendry



Michael received his B.A. from St. John’s College in Annapolis and his M.A. from the University of Chicago, both in Liberal Arts / Humanities. After working for ten years as a computer programmer in Annapolis, San Francisco, St. Louis, and Northern Virginia, he went back to school and got his Ph.D. in Classics (Latin) from the University of Virginia. He has spent most of the years since then teaching at high schools, middle schools, and universities, public, private, and religious. He has also worked as a technical writer, an indexer of books, and (in college) moving furniture and driving tractor-trailers for Mayflower.

His scholarly interest is textual criticism of classical texts, which is a good complement for language instruction, since both involve careful attention to the details of the work. He is entirely uninterested in trendy theories of literature. He has published 47 papers in classical journals, and given lectures on Greek and Latin authors at Oxford, Cambridge, and half a dozen other universities in the U.S. and U.K.

He is also interested in using computers to help teach Latin and edit texts. His websites (all works in progress) include for Latin learning, for Latin texts, and for Roman numerals. Two years ago, he gave a lecture on his work at the University of Leipzig Digital Humanities Seminar.

Michael spends most of his salary on books, and lives in Staunton on weekends, where he keeps his library. He spends much of his spare time going to plays (mostly Shakespeare) and operas at the Blackfriars Playhouse in Staunton and the many theaters in the D.C. area.

The motto he devised in high school and has mostly followed since is “Do it the hard way: you’ll learn a lot more.”

Ms. Wendy Huth



Deciding to pursue her passion, Wendy began a career teaching mathematics after many years working as an actuary and benefits executive-level consultant. Her professional experience included all facets of the employee benefits field including pension, retiree health, health and other group benefit plans. As a consultant, she summarized and presented complex material to clients in a clear and understandable manner. As a mentor and trainer, she developed training programs both locally and nationally for the company. The core competencies that transferred to her pursuit to become a teacher include a strong mathematical background and the ability to bring applications of mathematics into the classroom. Drawing on her professional experience, her combination of theoretical and practical knowledge is unique and enriches the classroom.   

Wendy has a Commonwealth of Virginia Collegiate Professional License with a Mathematics endorsement. She has taught for Loudoun County and also as a private math tutor the last ten years since leaving behind actuarial work. She is familiar with a variety of math curriculums. Wendy has B.A. in Mathematics with 15 hours post graduate credits. Wendy is passionate about teaching math and believes learning should be fun and interesting for students in a classroom fostering trust and respect.

Mrs. Rita Lahiri

Department Chair, Mathematics

Rita started her professional career on Wall Street in the Derivatives Trading Market. After a few years, she transitioned her career to teaching mathematics in hard to staff schools with NYC Teaching Fellows while obtaining her Masters in Math Education. She moved to Virginia in 2005 and taught at an IB high school in Arlington, VA. As SOL lead teacher and the Algebra 2 committee lead, Rita participated in designing the Algebra 2 curriculum.

Through the years, Rita has taught subjects ranging from Pre-Algebra to Pre-Calculus and IB Math Studies. She has worked with a diverse group and range of students from different backgrounds and abilities. She believes everyone can learn to appreciate the beauty in mathematics. As a teacher, Rita’s goal has been to make mathematics come to life and ignite mathematical curiosity for students. Rita encourages students to discover connections in mathematics and develop a conceptual understanding of the foundation of mathematics.

Numbers are everywhere. If we open ourselves up to learning and engaging in the study of mathematics, the opportunities are limitless.

Ms. Vanessa Moreno

German, Spanish
Student Academic Support


Vanessa is originally from Madrid, Spain. She grew up in Madrid and went to Universidad de Alcala de Henares. In 1999, she was granted a scholarship to finish her studies in Germany. Once there, she graduated with Honors in 2000 earning her bachelor's degree in Hospitality and Tourism Management. From 1999 through 2002, she lived and worked in Germany. She worked at Weiterbildungszentrum school, in Ingelheim, as a Spanish teacher.

In 2003, she moved to the United States and worked as an European travel expert consultant, being a Spanish tutor on the side. Seeking professional advancement and new challenges, she soon made tutoring her full-time job. She took the Spanish praxis exam and became a substitute teacher for Loudon County. She has been working for Hola Kids LLC, teaching Spanish in an immersion program, developing children’s language skills through games and fun activities.

She is a firm believer that learning a second language at an early age has a positive effect on intellectual growth and enriches and enhances mental development. She likes to engage children in speaking right away, as well as better an ear for listening.

Ms. Yangxin Ou


Yangxin Ou (Ms. Shin) was born in China. She went to college in Russia and got her bachelor's degree from St. Petersburg State University. She came to the United States in 2010 and earned a master's degree in Probability and Statistics from Michigan State University in 2012.

Yangxin Ou is a native Chinese speaker and has built strong language and communication skills through her diverse educational and life experience. She is also a multi-linguist. Yangxin Ou has been working at a learning center in Virginia with students from K-12 since 2012, as well as being the director assistant to develop curricula that meet the needs of students. She enjoys teaching and helping students build confidence in their ability to achieve, both academically and socially.

Mr. Jim Percoco

Department Chair, History

Jim at Minute Man.JPG

Jim is a nationally recognized history educator and author. He taught for 32 years at West Springfield High School in Fairfax County.

Jim is the recipient of numerous teaching awards including: Outstanding Social Studies Teacher of the Year at the Walt Disney Company American Teacher Awards, the Archivist's Award for Achievement presented by the National Archives and Records Administration, the Mount Vernon Teacher of the Year Award, and the Civil War Trust's Teacher of the Year to name a few. He has also written a number of books, such as A Passion for the Past: Creative Teaching of US History, and Divided We Stand: Teaching About Conflict in US History. In 2011, Jim was inducted into the National Teachers Hall of Fame.

A devotee of Thomas Merton, Jim aspires to Merton's conviction, “We do not exist for ourselves alone, and it is only when we are fully convinced of this that we begin to love ourselves properly and thus also love others. What do I mean by loving ourselves properly? I mean, first of all, desiring to live, accepting life as a very great gift and a great good, not because of what it gives us, but because of what it enables us to give others.”

Mr. Clark Ragsdale

Mathematics, Chemistry


Clark went to his father and brother’s alma mater at Virginia Tech for his BS in Chemical Engineering.  After 13 years on the corporate path with DuPont, he decided to switch course and obtain his MBA in Marketing and Multinational Management from Wharton. This provided a good background for moving to Mexico City and spending four years consulting with various Mexican and international companies. Subsequently, the boom in technology provided an additional opportunity to work in IT Management Consulting with projects throughout the US as well as Russia and Argentina.  However, extensive travel did not fit well with his being home for two children, so he and his family moved to Leesburg where he bought and has operated a landscape company by day while tutoring all levels of math through AP Calculus as well as AP chemistry in the evenings and during weekends for the past 10 years.

Of all his business and professional pursuits, Clark finds working with students to be the most rewarding and looks forward to sharing his enthusiasm with the students at LSG.

Mr. David Romero

Physical Computing, Science
Department Chair, Science and Computer Science


David earned his B.S. in physics from Caltech. He is interested in condensed matter physics – specifically systems that demonstrate quantum effects at large scales, like superconductors and superfluids.

David has taught in one form or another since 2006, when he served as an AmeriCorps member at Tenth Street Elementary in Los Angeles and Western New York Maritime Charter in Buffalo. At Tenth Street, he also served as part of Everybody Wins L.A.!, working with English Language Learner (ELL) students, organizing lunchtime read-alouds with downtown Los Angeles professionals, and facilitating a path-to-college workshop for parents. At Maritime, he supported struggling students, organized talks from University of Buffalo engineering students, and collaborated with other service sites throughout the region. For three years, David taught advanced students at BASIS Scottsdale, teaching physics and a fifth-grade algebra course. He coached the Science Bowl team to three state championships, with the team placing in the top ten at the national competition.

David feels the most whole when he is serving others. The joy of watching how quickly young people can learn and grow gives him hope for the future. The Loudoun School’s optimistic and caring atmosphere is what drew him to move across the country just to work here.  He hopes to explore what can and should be done to enable students to work hard and enjoy doing it.