Dedicated to authentic Montessori education, the faculty and staff at Hollis Montessori are energetic, optimistic, talented, and want to make a difference. We strongly believe that great teachers are our best asset.


Kari Headington - Head of School

Kari began her Montessori journey over 30 years ago and continues to be passionate about the Montessori method of education. She joined Hollis Montessori in 2009 as our Children's House Lead Teacher and became Head of School in 2010. Kari completed her AMI Primary Diploma at the Montessori Training Center of Minnesota in St. Paul. She received her B.S. in Special Education from Moorhead State University in Moorhead, Minnesota. Prior to coming to Hollis, Kari was the Lead Teacher in Montessori Children’s House classrooms in both Massachusetts and Minnesota. Outside of teaching, Kari enjoys travel, reading, running and visiting the sights of New England with her family. Her two sons enjoyed a Montessori education through 9th grade at HMS.


KAREN BRIDGEO - admissions & campus MANAGER

Karen joined Hollis Montessori in 2013. She received her B.A. in Geography from Mary Washington College in Fredericksburg, Virginia. Karen enjoyed a long tenure in the hospitality industry prior to coming to Hollis Montessori. She has worked as a volunteer for Beaver Brook Association in Hollis and the Audubon Society of NH. In 1996, Karen hiked the length of the Appalachian Trail. Outside of school, Karen enjoys reading, raising her family, cooking, and traveling. Her younger son attends Hollis Montessori and her older son is a graduate.


sarah shor - business MANAGER

Sarah joined Hollis Montessori in 2019. She holds an Ed.M. in Technology in Education from the Harvard University Graduate School of Education, and a B.A. in History from Hampshire College in Amherst, MA. She helped found two charter schools, Polaris Charter School, and Kreiva Academy, in Manchester. She also founded the Polaris Educational Foundation. Previously, she worked for museums and in online course creation. In her free time, she enjoys cross country skiing, painting, singing, cooking, yoga, Pilates, roller blading, and walking knee-deep in the ocean. Her child is a graduate of Hollis Montessori.


Jeannine Phalon - Office Manager

Jeannine joined the administrative team at Hollis Montessori in 2018. She has worked as a special education paraprofessional and in business management. Jeannine has held several volunteer positions in her home town of Mason over the years which have included EMT for the Mason Fire/EMS as well as chair of the Recreation Committee. In her free time she enjoys time with her family.



Andrew joined the Hollis Montessori Upper School faculty in 2014. Andrew completed the NAMTA/AMI Orientation to Adolescent Studies and has a B.S. in Physical Science Education from Brigham Young University and a J.D. from Northeastern University School of Law.  Prior to joining Hollis Montessori, he taught chemistry, physical science and math at the high school level for four years. In addition to his education experience, Andrew practiced law at a litigation firm in Londonderry, New Hampshire. Andrew enjoys mountain biking, snowboarding, hiking and camping. He loves to travel and spend time outdoors with his wife and young children. His son and two daughters attend Hollis Montessori. 


Susan holmes glazier - UPPER SCHOOL TEACHER

Susan joined the Hollis Montessori Upper School faculty in 2019. Susan holds an AMI Elementary diploma from Washington Montessori Institute and an AMI adolescent certificate. She received her BS and MS in Natural Resources from the University of Michigan and the University of Vermont and her MEd in Montessori education from Loyola University Maryland. She has been on the faculty of the AMI Orientation to Adolescence for many years and has spoken at national Montessori conferences. Prior to joining HMS, Susan taught at Hershey Montessori's Adolescent Program, was the Director of the Mountain Laurel Montessori Jr. High School, and was the founding Adolescent Guide at The Children's House Montessori in Northern Michigan. Susan was a Montessori child from age 2 - 5th grade. Susan loves hiking, gardening, being outdoors, singing, playing guitar and fiddle, and making pottery. Her son attends Hollis Montessori School.



Meesa joined the Hollis Montessori Upper School faculty in 2014. She has a Masters in Education from Simmons University and a B.S. in Elementary Education from Brigham Young University with minors in Spanish and Teaching English to Speakers of Other Languages (TESOL). Meesa has studied abroad in the Dominican Republic and spent a year and a half volunteering in Brazil. Prior to joining Hollis Montessori, she taught at a dual language school for ten years. Meesa has done volunteer work with adolescent girls. She enjoys the outdoors, camping, hiking, mountain biking, snowshoeing and snowboarding, as well as yoga, reading, piano, cooking, traveling to Latin American countries and spending time with her young family. Her three children attend Hollis Montessori. 


Shannon welsh - Upper Elementary Teacher

Shannon joined Hollis Montessori in 2015 as our Upper Elementary Lead Guide. She earned her AMI Elementary Diploma from the Washington Montessori Institute and her M.Ed from Loyola University, completing both programs in 2007. She holds a B.A. in Interdisciplinary Studies with a concentration in Anthropology/Sociology and a Minor in Fine Art from the University of Maine at Farmington. Shannon has taught in Montessori elementary classrooms in Massachusetts and also worked as a course assistant for the AMI elementary teacher training program at the Montessori Institute Northwest in Portland, Oregon. Her two children attend Hollis Montessori.


Zoe Castro - Lower Elementary Teacher

Zoe joined Hollis Montessori in 2010 as our Lower Elementary Lead Guide. As a child, Zoe attended Montessori schools through fifth grade. After completing her AMS Montessori Upper Elementary training at Michigan Montessori Teacher Education Center, Zoe went on to complete her AMI Elementary Diploma at the Washington Montessori Institute at Loyola University in Maryland. She received her B.A. in English and Master’s Degree in Education from the University of Michigan. Zoe taught in Elementary classrooms in Michigan, Texas, and Massachusetts before joining the Hollis Montessori community. Zoe enjoys quilting and other crafts, spending time outdoors, and traveling, especially around New England. 


Sarah Gilleeny - Lower Elementary Teacher

Sarah joined Hollis Montessori in 2016 as an Elementary Assistant. She worked for 3 years with the Upper Elementary, and 1 year with the Lower Elementary. She completed her AMI Elementary Diploma at the Montessori Training Center of the Northeast in Hartford in the Spring of 2019.  She graduated from Ithaca College with a B.S. in Cinema & Photography and a minor in Anthropology, and then went on to obtain her MFA from Pratt Institute with a focus on Photography. Prior to pursuing her Montessori career, she worked full time as a wedding and portrait photographer, running her own business for 10 years.  She enjoys spending time with her family, reading, running, being outdoors and being artistic. Her children attend Hollis Montessori.


Carla Carney - Children's House Teacher

Carla joined Hollis Montessori in 2010 as a Children's House Guide. A Montessori child herself, Carla earned her AMI Primary Diploma from the Montessori Institute of Atlanta and her B.A. in Organ at Agnes Scott College in Decatur, Georgia. She has taught in Montessori schools in Georgia and Massachusetts, and has taught English in Tai Yuan, China. Carla enjoys running marathons, sewing, quilting, traveling, cooking, and knitting. Her daughter attends Hollis Montessori.


Anjali Longan - Children's House teacher

Anjali joined Hollis Montessori in 2013. An experienced early childhood educator, Anjali completed her AMI Primary Training from the Montessori Institute of San Diego in 2015. Anjali holds a B.A. in Communications from the University of New Hampshire and is working towards the completion of a Masters in Education Studies from Rivier University. Anjali is a member of New England Environmental Educators Alliance, the National Association for the Education of Young Children, and she was the 2012 New Hampshire Project Learning Tree Educator of the Year. Anjali  has a daughter that attends HMS and a daughter that is a graduate. In her free time she enjoys time outdoors, reading, crafting, gardening, travel and adventure.


JEan Ahonen - Upper Elementary Assistant

Jeannie joined Hollis Montessori School in 2019 as our Upper Elementary Assistant. After having recently lived abroad in both Spain and England with her husband and family of 3 boys, she enjoys bringing her international perspective to the classrooms. A graduate of UNH Durham with a double major in German and Political Science, Jeannie worked for EF Educational Tours, a student travel organization. She also has extensive experience substitute teaching in the Amherst, NH middle and high schools. In her spare time, Jeannie enjoys running and spending time with her family.


Jill Evans - Lower Elementary Assistant

Jill joined Hollis Montessori in 2017 as a Lower Elementary Assistant. She attended UMASS Amherst and is now completing her Bachelors of Education with a Montessori Concentration at the University of Hartford. Jill is currently enrolled in the AMI training at the Elementary level. She loves to travel and experience new people and cultures. In her spare time Jill likes to be outside exploring the natural world, especially with family. She enjoys winter hiking, running, skiing and sharing her love of the outdoors with children. Jill has two children that attend Hollis Montessori School.


Jessica Robson - Lower Elementary Assistant

Jessica joined Hollis Montessori in 2019. She holds a Master’s Degree in Reading and Language from the University of Massachusetts Lowell and received her Reading Recovery training in 2011. Jessica earned her B.S. in Elementary and Special Education from Rivier University in 2004. Prior to joining Hollis Montessori, Jessica was an elementary educator in Massachusetts for ten years. She spent time working as a special educator, an elementary classroom teacher, and a reading specialist. Jessica enjoys spending time with her young family, cooking, photography, sewing, and being creative. Jessica has a deep appreciation for children’s literature and adores sharing books with children. Her two daughters attend Hollis Montessori School. 


Katherine Skinner - Children's House Assistant

Katie joined Hollis Montessori in 2008 as a Children’s House Assistant. She holds a BA in psychology from Saint Anselm College. Katie attended Montessori school as a child and grew up in a Montessori home with a mother who was a Children’s House teacher for many years. Prior to Hollis Montessori Katie was a para-professional in the special education department of Hollis Brookline High School and before that was the assistant coordinator of Teen Programs at the Manchester NH YWCA. In her free time she enjoys traveling around New England to watch her children play soccer, reading, photography, gardening, cooking, exploring New England towns, and spending time with her family and yellow lab.



Beth joined HMS in the fall of 2019 as a Children’s House Assistant following her graduation from the Montessori Training Center Northeast in Hartford, CT with her AMI Primary diploma. Beth also holds a BS in Nursing from Elms College in Chicopee, Massachusetts. Prior to her Montessori training, Beth spent 12 years as a Registered Nurse during which she spent time serving chronically ill children in the home care setting as well as providing critical and post surgical care to children and adults. She enjoys yoga, vegetable gardening, being outdoors and spending quality time with her children and family.


Andrea Seddon - Language Specialist

Andrea joined Hollis Montessori in 2013 as our Language Specialist. A seasoned language teacher in both French and Spanish, Andrea started the elementary language program for the Carlisle Public Schools and spent eight years teaching adolescents in the Newton Public Schools. She has her B.A. in French from the University of Arizona and her Masters in Teaching from Simmons University. Some of her most precious teaching memories come from time spent with students abroad and seeing the language come alive through their eyes. Andrea enjoys cooking for family and friends and is passionate about educating herself and others about traditionally prepared foods and their healing properties. She has lived and studied in France, Mexico, and Costa Rica and loves to incorporate those foods and traditions into her life and the lives of her students. Outside of teaching, Andrea enjoys traveling, hiking, photography, exploring nature, and spending time with her family. Her younger daughter attends Hollis Montessori and her older daughter is a graduate.



Jim joined Hollis Montessori in 2011 as our Upper School Lead Guide and retired in 2015. He continues to support our school with his time and talents in a variety of ways. During his career as a Montessori teacher, he enjoyed working in different environments ranging from Primary to Adolescent. Prior to coming to Hollis, he taught as an Adolescent Guide at the Hershey Montessori Farm School in Ohio. Jim has been a speaker at several AMI/NAMTA conferences. He holds a B.A. in English Literature from Dartmouth College. He completed the NAMTA Orientation to Adolescent Studies and his AMI Elementary training at the Washington Montessori Institute under Margaret Stephenson. Jim enjoys adventures and using his hands as well as his head. He is the father of two adult children who completed their Montessori educations in the Hershey Adolescent Program. He lives on a small farm in New Hampshire with his wife, who is also a retired Montessori teacher.

The training of the teacher is something far more than the learning of ideas. It includes the training of character; it is a preparation of the spirit.
— Maria Montessori