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Our Staff


As the Director of DMS Jess brings love and leadership to the school. She believes in our school's mission and the importance of providing a unique and exceptional educational experience for students, families, and staff. Jess is passionate about supporting families and teachers to help children socially, emotionally, and academically build a better world. She fosters a culture where all students feel safe to learn, thrive, and make mistakes.


Jess has been involved in education for 20 years. Her work encompasses experience in experiential education with the National Outdoor Leadership School, working with adjudicated youth programs in Utah, teaching in various public school districts, and as a Montessori Lead teacher.

A lover of the outdoors and adventures, Jess studied Experiential Education receiving her bachelor's from Western Colorado University, she also holds a Master’s Degree in Education and Linguistic Diversity from Colorado's Adam State University. Jess also holds her Colorado Elementary teaching certification.


Jess grew up in Fort Collins Colorado but has lived in Durango for 20 years and it is very much her home. She and her husband have three children Nellie, Hatch, and Ailbe, her youngest is a 2nd grader at DMS.


When not at school Jess enjoys the area’s beautiful outdoors. She and her family love to fly fish on the San Juan River. Her favorite hobbies are downhill skiing, mushroom hunting, and rowing her raft down the river.

Jess Miller


Jess Miller


My name is Aruna Pietrack, I was born in Kolkata, India and was adopted when I was a baby. I grew up in Salida Colorado and moved to Durango to attend college at Fort Lewis. I have a BA in Business Marketing and Advertising. After I graduated, I took a job at the Campbell Child and Family Center where I was a lead educator for 10 years. During these years I went back to school and received my lead and director’s certification from Southwest Community College here in Durango. In the summer of 2020, I was a student at MECR in Boulder Colorado and received my  Montessori Certification in Early Childhood. 


In 2013, I married my husband (Drew) and we have been married for 9 years. I am an only child but after marriage,  I gained 3 brothers, 3 sisters-in-laws, and 5 nieces.  In 2021, my husband and I welcomed our first son Jett in early September. I took last school year off to be with our son and to support my husband after he had a life-threatening health scare in early November. His recovery has been miraculous! We have a sweet 6 year old Austrian Shepherd puppy named Rio.


I own my own wedding coordinating business which I do during the summer and early fall. My hobbies include soccer, Zumba, hiking, being a new mom, and just being outdoors in stunning Durango.  


Throughout my years of teaching, I love watching the children grow through play and small groups. I can see their eyes light up when they find love in their learning. The connections that children have with their peers and the encouragement from their teachers is priceless. I continue to gain more understanding on how the child’s mind works and grows with every interaction.  I am happy to be back in the classroom this year!


Aruna Pietrack


Katie King


Katie is the fun-loving assistant teacher in the Early Childhood classroom. She is originally from Nashville, Tennessee. She graduated from Brevard College with a degree in Wilderness Leadership and Experiential Education. Before Montessori, she was a Lead Guide at North Carolina Outward Bound School and a Senior Guide at Open Sky Wilderness Therapy. She has a great appreciation for the Blue Ridge Mountains but she believes her heart lives in Colorado. 


She is excited to be an educator at DMS and recently completed her Montessori certification in Early Childhood! She values creativity, humor, inclusion, authenticity, compassion, exploration, and emotional/physical safety. She brings these values into the classroom so that all the students feel safe, curious, and connected with the community. Katie believes every person is powerful, valuable, and capable. She likes to use art, storytelling, nature, and mindfulness to help engage my students. She is very passionate about holistic education and mental health. 


Katie loves to cook, do yoga, mountain bike, and connect with her personal community in Durango. She is very social and outgoing and loves to travel and connect with new people. You might see her biking in downtown Durango or attempting latte art at your favorite coffee shop on the weekends.

Cait was born and raised in the suburbs of Chicago and moved to Durango in 2011. She completed her student teaching at Pan American School in Costa Rica and graduated from Fort Lewis College with a Bachelor's in Elementary Education (K-6).  Cait holds a Certification for Culturally and Linguistically Diverse Education. She began teaching in the Upper Elementary classroom at Durango Montessori School. 

Cait has taught in various environments and is a very dynamic and flexible teacher. Her experience reins from teaching at Durango 9R School District, tutoring, and homeschooled students of various ages, teaching Spanish for DMS, and being the Lead teacher in Early Childhood.  

Cait is committed to being the best she can be, she continues to grow and learn as a Montessori teacher. She recently completed the Elementary Montessori Fundamental 80-hour workshop and participated in an in-depth phonics course called Project Read.  Cait is currently our Lower Elementary teacher and she is so happy to continue to be a part of this wonderful community!!! 


Caitlin Callahan


Becca is the enthusiastic teaching assistant in the Lower Elementary classroom. She is originally from South Lake Tahoe, California, but has lived all over California and Oregon. She graduated last fall from the University of Massachusetts Global with a BA in Early Childhood Education. Before Montessori, she was volunteering for multiple low-income elementary schools and after-school programs in the Lake Tahoe area, so she is familiar with working with children of all ages, abilities, and backgrounds. While she misses the stunning beauty of the Sierra Nevadas, the Rockies and Colorado feel like home and are a welcomed change.  


She is excited to be a teaching assistant at DMS and values empathy, creativity, humor, perseverance, honesty, and curiosity for learning new skills. She will reinforce these ideas and traits in the classroom through open communication, engaging hands-on art projects, and any additional classroom resources the students will need. Becca believes that each child has their own unique abilities and ways of seeing the world, and will continue to foster the above traits in each child as the year progresses. 


In her free time, Becca loves to socialize with new people and get outdoors by hiking, biking, skiing, and going to concerts at Red Rocks Amphitheater. She also loves to cook and explore nearby National Parks with her family, fiancé, and U’i the hiking cat. She looks forward to learning and growing with each of your students at DMS! 

Becca Bertolona


Becca Bertolina


Ms. Foster served as the upper elementary teacher at DMS from 2013 until 2017, and she returned to the same position at DMS in 2022.  In the interim, she taught fifth grade and then third grade in Gunnison, CO and completed curriculum development projects for Grand Canyon National Park and Indiana Dunes National Park in partnership with the East Troy Railway Museum.  Ms. Foster strongly believes in Montessori methods and philosophy due to the emphasis on teaching the whole child with active, hands-on learning methods, basing the curriculum on the natural development of children, and incorporating interpersonal and practical life skills – all while focusing on high academic standards and kindling each child’s inner love of learning.


Ms. Foster holds her American Montessori Society Elementary I certification, and she has her master’s degree in elementary education with a Montessori concentration from Plymouth State University.  She earned her bachelor's degree from Fort Lewis College with a major in interdisciplinary studies, teacher education option, and a minor in theater.  She holds her Colorado teacher certification (K-6), as well as Colorado linguistically diverse education and Spanish-English linguistically diverse education specialist endorsements (K-12).


In addition to teaching, Ms. Foster loves to dance, ride her unicycle, go sledding, hike, take road trips, and play board games with her wife, Laura.


Randi Foster

Michelle Herringer.webp

Michelle is a Certified Academic Language Therapist and a Structured Literacy Dyslexia Specialist, and is now pursuing a qualification to train others to become dyslexia practitioners and therapists. She has been at Durango Montessori School since 2009 and has worked in many capacities including School Director and Upper Elementary Lead Teacher. (She got to teach her own daughter, Isabelle, who graduated from Durango Montessori in 2013.). She is certified as a Montessori elementary teacher and a Colorado public school teacher, and has her Master’s degree in Reading. Her nationally-registered therapy dog, Charlie Bear, loves to visit with the Durango Montessori community when he is not sleeping or stealing food. When Michelle isn’t spending time helping children learn to read and write or coaching other professionals, you can find her playing in the mud, creating pieces in her pottery studio, or, like most Durangoans, spending time outside skiing, hiking, or biking. 

Michelle Herringer


Mary Polino is the Founder of Durango Montessori Elementary School started in 2005. Retired from “active duty,” she currently serves at the school as a Montessori curriculum and staff consultant. She believes that good schools are created by a practice of effective application of academics combined with a strong current of respect for each other and the process of learning, and that teachers, staff, and parents work together to create such an environment.  


Mary is also an official “empty nester” with no extra time on her hands. She now tutors elementary and middle school students, gardens, cooks constantly, eats constantly, works off what she eats with Crossfit, hiking, biking, dancing, and yoga.  She is involved with Durango Devo and loves a good crossword puzzle or book at the end of the day.


Mary Polino

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