Carrie Brennan Bio

Carrie Brennan joined Thetford Academy as Head of School in July 2019. She brings deep experience in the field of education to her leadership role at TA, including years as a history teacher, high school principal, and professional development leader. Prior to her appointment at TA, Carrie was in Tucson, Arizona for 25 years, where she was on the founding team of two high schools – Catalina Foothills High School, established in 1992, and City High School, established in 2004.

Carrie is especially passionate about creating conditions for teachers to thrive, integrating real world relevance and hands-on engagement into the curriculum, and ensuring every student is known well and nurtured to succeed.

Carrie’s work in education and education leadership has been widely recognized for its innovation and impact; she has received numerous awards, including an exemplary teacher award, a statewide principal award, and multiple community leadership awards. In 2019, she was named one of Tucson’s “Women of Influence” in the field of education.

Carrie serves on the the national advisory board for the University of Arizona College of Education. Previously she was a member of the School Reform Initiative’s board of directors and a long-time trustee for the Community Foundation for Southern Arizona.

Carrie earned her undergraduate degree in history and education at Dartmouth College and holds a Master of Arts in Education from the University of Arizona.

Carrie has long-standing ties to the Upper Valley community. She did her student teaching at Hanover High School, joining the school’s faculty from 1988 to 1990. Her husband and fellow educator, Michael Mann, was a student teacher at Thetford Academy in 1989. “My husband and I are thrilled to be returning to the Upper Valley, where we launched our education careers three decades ago,” Brennan shares. “TA is such a vibrant place to teach and learn, thanks to the dedicated faculty, community support, positive school culture, active student body, and rich history.” 

Carrie and her husband reside in Thetford, Vermont with their two sons.



We set high expectations. We challenge all members of the school community to reach their highest potential.


We value initiative, courage and dedication. We take personal responsibility for the goals we set and work hard to achieve them.


We work and learn together. We see teachers as coaches, students as team members, families as partners, and learning as practice and action.


We provide individuals with personalized support and guidance. We care about each other and the larger community.


We respect differences among people. We welcome the contribution of varied perspectives to a rich and flexible school culture.