Best Private Online School | Meet Our Faculty

David Alvarez-Carbonell

Bryn Mawr Online School Faculty Member

Chemistry

David Alvarez-Carbonell

Bryn Mawr Online School Faculty Member

Dr. David Alvarez-Carbonell holds a Bachelor of Science and a PhD in biochemistry from McGill University in Montreal, Canada. He is a medical scientist specializing in the molecular and cellular mechanisms of diseases such as cancer, inflammation, and HIV infection. In 2017, David earned an MBA from the Weatherhead School of Management at Case Western Reserve University to enhance his leadership and management skills. With over 20 years of teaching experience, Dr. Alvarez-Carbonell has taught chemistry to both high school and college students, complementing his extensive research career.

Justin Curtis

Head of Bryn Mawr Online and Faculty Member

Computer Science

Justin Curtis

Head of Bryn Mawr Online and Faculty Member

Justin Curtis serves as Head of The Bryn Mawr Online School and has been part of the Bryn Mawr community for over 20 years. He previously served as K-12 Computer Science Department Chair and Director of Technology at the Baltimore campus where he led the development and expansion of the school’s Innovation Labs, launched and oversaw the Summer Session program, implemented campus-wide technology initiatives, and developed a K-12 computer science curriculum. Prior to Bryn Mawr, he worked at an early-stage startup serving schools and as an educational technology consultant. Justin holds a B.S. from Stevenson University and an M.S. from Johns Hopkins University.

Toni Dunlap

Bryn Mawr Online School Faculty Member

Computer Science

Toni Dunlap

Bryn Mawr Online School Faculty Member

Toni Dunlap joined the computer science faculty at Bryn Mawr Online in fall 2024. She previously taught students in grades 6-12 at Princeton Day School in New Jersey and also has experience as a computer science education specialist, content developer, curriculum writer, and instructional coach. A native of Atlanta, Georgia, Toni earned her undergraduate degree in Computer Science from the University of Denver. During her studies, she discovered a passion for mentorship, community organizing, and introducing students to CS and STEAM pathways. This passion has guided her career in computer science education, allowing her to combine her love of the subject with her commitment to supporting and inspiring students.

Frank Ecker

Bryn Mawr Online School Faculty Member and Program Designer

Math and Physics

Frank Ecker

Bryn Mawr Online School Faculty Member and Program Designer

Frank Ecker became part of the Bryn Mawr faculty in 2015 and was recognized with the school’s Alumnae STEM Chair award in 2021. When not in the classroom, he now enjoys working behind the scenes on the administration of Bryn Mawr Online, and helping to plan fun activities for the community. A graduate of Savannah College of Art & Design and Duquesne University, Frank holds a B.F.A. in Photography and an M.S. in Secondary Mathematics Education. Prior to Bryn Mawr, he taught high school students in Maryland's Anne Arundel County Public Schools for seven years, as well as teachers in the graduate education programs of Johns Hopkins University and University of Maryland Baltimore County. He has taught every level of mathematics from Algebra 1 to Multivariable Calculus, plus Statistics; and has developed curriculum for the Maryland State Department of Education, AACPS, and the education division of the Discovery Channel. Frank was the FTC Robotics coach and the assistant coach of the three-time champion Varsity Golf team at Bryn Mawr’s Baltimore campus, in addition to assisting students and staff with woodworking projects in the school’s Innovation Lab.

Sam Hargrove

Bryn Mawr Online School Faculty Member

Math

Sam Hargrove

Bryn Mawr Online School Faculty Member

Sam Hargrove teaches Algebra, Calculus, and Statistics at Bryn Mawr Online, joining the faculty in 2025. He previously taught high school mathematics at Ursuline Academy and Tower Hill School, where he also served as Dean of the Class of 2023. His teaching career began at Canterbury School in New Milford, Connecticut, where he coached soccer and lacrosse in addition to teaching math, leading both teams to New England titles. Sam holds a B.A. in Economics and Art History from Williams College and a master’s degree in Educational Leadership and Policy from the Lynch School at Boston College. In his spare time he enjoys all Philly sports, playing golf, and spending time with his wife and two daughters.

Madeline Hosier

Bryn Mawr Online School Faculty Member

Art

Madeline Hosier

Bryn Mawr Online School Faculty Member

Madeline Hosier has been a visual art instructor since 2019. She joined the Bryn Mawr faculty in 2022, teaching at both Bryn Mawr Online and the Baltimore campus. Madeline holds dual B.S. degrees in art education and art + design from Towson University, where she is pursuing her M.Ed. in art education. Inspired by her own high school art teacher, Madeline believes everyone is an artist and all students can achieve their creative goals. While she enjoys all traditional mediums, her passion lies in drawing and painting. Madeline sponsors after school art clubs and is an advisor to the Class of 2029 on Bryn Mawr’s Baltimore campus. Outside of teaching and making art, she enjoys swimming, collecting trinkets, and video games.

Katie Lambright

Bryn Mawr Online School Faculty Member

History

Katie Lambright

Bryn Mawr Online School Faculty Member

Katie Lambright joined the Bryn Mawr Online faculty in 2024 and teaches courses in history and the broader humanities. She brings to BMOS a decade of teaching experience at the secondary and post secondary level and additionally works as an instructor of American Studies at Towson University.

Erin McQueary

Bryn Mawr Online School Faculty Member

History

Erin McQueary

Bryn Mawr Online School Faculty Member

Bio coming soon!

Laura Milligan

Bryn Mawr Online School Faculty Member

English

Laura Milligan

Bryn Mawr Online School Faculty Member

Laura Milligan joined the Bryn Mawr Online faculty in 2025. She teaches courses in the English Department and enjoys being a part of the wider school community. Laura holds her B.A. from Smith College and her Master of Arts in Liberal Studies from Wesleyan University. She has been teaching English and advising students at independent schools for over a decade. In addition to teaching at Bryn Mawr, Laura is currently editing her second novel.

Alison Mitchell

Bryn Mawr Online School Faculty Member

Math

Alison Mitchell

Bryn Mawr Online School Faculty Member

Alison Mitchell joined the Bryn Mawr Online School faculty in 2026 and is teaching Algebra I. She is also a private SAT and ACT tutor, executive function coach, and math tutor. She brings a deep passion for making learning fun and connecting with her students. Her teaching career began in Alexandria, VA, as a special education teacher while also coaching the varsity diving team. Alison holds a B.A. in Psychology, a M.A. in Special Education, and a Ed.S. in Administration and Supervision from the University of Virginia. In her spare time she enjoys volunteering, thrifting, hiking, and spending time with her husband and three children.

Andrea Murden

Bryn Mawr Online School Faculty Member

Spanish

Andrea Murden

Bryn Mawr Online School Faculty Member

Andrea is a certified Spanish teacher with over 10 years of experience. She holds a bachelor’s degree in World Languages from Santiago de Cali University in Colombia, where she also worked as an interpreter for the 2011 FIFA U-20 World Cup. She has supported students at various brick-and-mortar and online schools, including the Johns Hopkins Center for Talented Youth, where she taught for five years. Andrea is passionate about the Spanish language and culture and loves creating engaging learning experiences for students of all proficiency levels and learning styles. She enjoys watching sunsets, animated movies, and spending time at the beach with her family in Florida.

Patricia Sviezzi

Bryn Mawr Online School Faculty Member

Spanish

Patricia Sviezzi

Bryn Mawr Online School Faculty Member

Patricia Sviezzi is an educational professional and Spanish teacher with 24 years of teaching experience. She holds a License in Educational Psychology and a Professorship in Psychopedagogy from Universidad Blas Pascal, Argentina. She has completed multiple postgraduate diplomas including Education in Social Sciences, Educational Management, and Spanish as a Second Language. Educational Coaching is also one of her specialties. Patricia is passionate about constructivist approaches to learning. She is dedicated to supporting students and educators in achieving their full potential.

Alyson Tockstein

Bryn Mawr Online School Faculty Member

Environmental Science

Alyson Tockstein

Bryn Mawr Online School Faculty Member

Alyson Tockstein teaches Middle School Science, Biology, and Environmental Science at Bryn Mawr Online. She brings a deep passion for connecting students to real-world science. Prior to Bryn Mawr, Alyson taught at Sacred Heart Greenwich and Pace Academy. She has also worked with the Maritime Aquarium at Norwalk, the World Science Foundation, and the Talcott Mountain Science Center. Outside the classroom, Alyson serves as a Board Member for the Florida Marine Science Educators Association, and consults on science storytelling and education projects that promote diversity and inclusion in STEM. A National Geographic Certified Educator, she has published research in climate change, marine science, and museum education. Alyson holds a bachelor’s degree from the University of South Carolina and a master’s degree from Columbia University.

Erin Tschantret

Bryn Mawr Online School Faculty Member and Director of Community Programming

Wellness & Public Speaking

Erin Tschantret

Bryn Mawr Online School Faculty Member and Director of Community Programming

As a Yogi, Shamanic Healer and Reiki Master, Erin explores diverse pathways to vitality and holistic health. She has been teaching yoga and meditation for more than a decade, holds over 700 hours of certifications, and teaches Wellness and Public Speaking at BMOS. With a BFA in Dance from The Ohio State University and an extensive background in the performing arts and fitness instruction, Erin approaches movement and communication as essential forms of expression and means to achieve one’s fullest potential. Her philosophy of wellness embodies cura personalis—care for the whole person in body, mind, and spirit. As the Director of Community Programming, Erin bridges her creative background and facilitation skills to cultivate meaningful BMOS traditions. Whether guiding a mind-body practice, coaching new public speakers, or coordinating engaging community experiences, she crafts environments that foster deep connection, self-expression, and a lasting imprint on the hearts and minds of students and faculty alike.

Christine Valenti

Bryn Mawr Online School Faculty Member

French

Christine Valenti

Bryn Mawr Online School Faculty Member

Christine Valenti brings more than 25 years of teaching experience from Montgomery County Public Schools in Maryland. She holds bachelor’s degrees in History and Social Studies Secondary Education from the University of Maryland, College Park, as well as a master’s degree in Education from Bowie State University. She has also completed graduate coursework through the University of Colorado Boulder in language teaching with technology. Christine is certified by the Maryland State Department of Education to teach French and History for grades 5 through 12. In her spare time, she enjoys running and swimming.

Sorrel Westbrook

Bryn Mawr Online School Faculty Member

English

Sorrel Westbrook

Bryn Mawr Online School Faculty Member

Sorrel Westbrook joined the English faculty at Bryn Mawr Online School in 2026. Sorrel has taught English for ten years, first at the University of Iowa as a graduate instructor, and then at Hopkins School in Connecticut, St. John's School in Houston, and, most recently, Crystal Springs Uplands School in San Mateo. In her time at independent schools, Sorrel has advised student publications ranging from literary journals to newspapers to magazines. She holds a BA in English from Harvard College and an MFA in Fiction from The Iowa Writers' Workshop. She has experience as a journalist, researcher, and ghostwriter. In her free time, she is either reading novels or at the roller skating rink, trying to stay upright.

Emily Wilson

Bryn Mawr Online School Faculty Member

Art History

Emily Wilson

Bryn Mawr Online School Faculty Member

Emily Wilson, AIA LEED (American Institute of Architects, Leadership in Energy and Environmental Design), teaches AP Art History at Bryn Mawr Online School. Beyond teaching at Bryn Mawr, she is a curriculum designer and online content developer who also tutors high school and college students in portfolio design and architecture, and is founder of Discover Architecture: a charitable organization providing K-12 architecture and design resources. For seven years, Emily led signature architecture programs for high school students at the Dalton School in New York City and Gulliver Prep in Miami. A registered architect in New York and a LEED Green Associate, she holds a Master of Architecture from Yale University’s School of Architecture and a Master of Fine Arts from the Maryland Institute College of Art. Emily has taught photography, drawing, model building, and sculpture at both Yale University and MICA. She has been awarded artist residencies at the Anderson Ranch Arts Center, Vermont Studio Center, Jentel Foundation, Santa Fe Art Institute, and Haystack Mountain School of Crafts for her artwork. Her professional design experience includes work at Casasco Studios, Perkins Eastman Architects, and Gluckman Mayner (now Tang) Architects in New York City.

Meet Our Faculty

David Alvarez-Carbonell

Justin Curtis

Toni Dunlap

Frank Ecker

Sam Hargrove

Madeline Hosier

Katie Lambright

Erin McQueary

Laura Milligan

Alison Mitchell

Andrea Murden

Patricia Sviezzi

Alyson Tockstein

Erin Tschantret

Christine Valenti

Sorrel Westbrook

Emily Wilson

Meet Mallory Pladus

English Teacher