Meet OUr Faculty

Elizabeth Brennan, Mathematics Department Chair

Elizabeth Brennan, Mathematics Department Chair

Recognizing that young women benefit from having female role models in STEM fields, Elizabeth Brennan, Ph.D., was drawn to teaching at a girls’ school. She joined The Hewitt School in 2011 and currently serves as our Mathematics Department Chair. “I wanted to teach in a student-centered, problem based, collaborative environment. The administration at Hewitt supports me so that I can teach in a way that is informed by all of the latest research in mathematics education.”

Elizabeth teaches students to collaborate with their peers when completing difficult problem solving sets, to iterate, get creative, and embrace mistakes as part of the process of coming to a solution. This collaboration is often cited as one of the things necessary for students, and girls in particular, to be successful in STEM majors in college, so it’s important to Elizabeth that she models the value of working together to solve problems.


Her favorite teaching moments come when students develop a new or unexpected solution that she has not seen before, and Elizabeth recognizes that these creative moments only happen when students are asked to create their own unique approaches to problem solving. “We often find that the methods and philosophy we are using in the math department are shared throughout Hewitt. Every faculty member motivates students to think critically about challenges.”

Alexis Williams, Middle School Dean of Students

Alexis Williams, Middle School Dean of Students

In her role as Middle School Dean, Alexis Williams works closely with students on everything from improving executive functioning skills to developing test-taking strategies. Students see Dean Williams as an ally, advocate, and staunch supporter, and she meets regularly with girls and their families to ensure every Hewitt middle schooler is happy, healthy, and reaching their academic and social goals.

Alexis Williams came to The Hewitt School as a learning specialist in 2011 and has worked in education for over a decade. Not long after joining our community she transitioned into a leadership role, first as Coordinator of Learning Support and more recently as Middle School Dean of Students.


Alexis values working one-on-one and in small groups with Hewitt girls, as this allows her to know each middle school student on a personal level. At Hewitt, a visit to the dean is something to look forward to, and Alexis notes “the girls know that my door is always open to them, and many visit throughout the day to check-in, ask questions, or just work quietly.” Whether helping students with a stuck locker, long term project, or challenging social dynamic, Alexis Williams plays an essential role in every Hewitt girl’s middle school experience.



Jeremy Sambuca, Director of Technology

Jeremy Sambuca, Director of Technology

As Director of Technology, Jeremy Sambuca gets to work with every member of The Hewitt School community. “Not only do I get see to students and faculty using technology to enhance and expand their learning, I get to work with families to improve the home-school connection, and with the administration on school-wide initiatives. What I love most about my job is that it’s always changing. Every day poses new challenges and opportunities and that’s exciting.”

Hewitt’s commitment to STEAM and Maker Education was appealing to Jeremy, and he’s found it exciting to work in a school community that is so eager to explore different ideas and work with new technology. Since joining Hewitt in 2014, a highlight of his time here has been developing the middle school robotics program. Initially designed as an elective course for students who were interested in learning how to build robots, it soon became clear that competitive robotics was a real passion for our students, and the Hewitt Robotics team was born.


In his role as a Hewitt Robotics coach, Jeremy works with students as they prepare for VEX Robotics challenges, and he sees the school’s philosophy of presence, empathy, research, and purpose at work during every practice and competition. “Hewitt Robotics gives our girls the opportunity to work as a team doing something they love, to push themselves to embrace challenges, and to see failures as a critical part of learning to do something new.”