Lower School Faculty
Class Teachers
Andrea Vander Pluym, Class One
Andrea Vander Pluym received her Waldorf teacher certification at the Bay Area Center for Waldorf Teacher Training, and graduated from the University of California, Los Angeles, with a B.A. in English literature and a concentration in creative writing. Andrea is the founding board president of Berkeley Rose Waldorf School, where she served in its administration and held several teaching positions, including class teacher for grades one through four. Her teaching experience prior to that includes teaching fine arts/crafts, special needs education, and afternoon programs in several Los Angeles institutions (early childhood through sixth grade). She is also a seasoned writer and editor, with over 20 years of experience. Andrea is the author of three published books for young adults, including Respect, which was recognized in a White House ceremony and brought to President Obama’s oldest daughter’s school. Andrea lives in Bodega with her teenage son, Bastien Brace. In her spare time, she supports a budding biodynamic farm on the property, and adventuring close and far from home.
Phone: (707) 575-7194 Ext: 305
Don Basmajian, Class Two
Don has been a Waldorf teacher since 1977. He received his Waldorf teacher training at Adelphi University, an M.A. in Education and has completed the five-year Spatial Dynamics training. He has led five classes from grades one through eight at Summerfield, and one class from grades five through eight. He also teaches Spatial Dynamics in the Lower School, P.E. in the High School, organizes the fifth grade Greek Olympiad at Summerfield and, with his wife Sieglinde, directs Circus Waldissima. He is also the founder and director of the Waldorf Teacher Training course at Summerfield. Don has four children—his oldest daughter graduated from Summerfield’s first twelfth grade class, while his son graduated from Summerfield in 2014.
Phone: (707) 575-7194 Ext: 301
Sieglinde Basmajian, Class Three
Bio coming soon…
Phone: (707) 575-7194
David French, Class Five
David was originally hired as Summerfield’s Lower School Coordinator, but felt strongly called to the children and parents of this class, and switched gears to take them through to their eighth grade graduation.
He has a strong background in Waldorf Education as a class teacher, in addition to various committee work, mentoring and teaching in teacher trainings. Having taught third grade twice, it’s no surprise that David most recently taught teachers in the third grade curriculum training at Sunbridge College in New York in summer 2020.
Phone: (707) 575-7194 Ext: 131
Kibby MacKinnon, Class Seven
Kibby grew up in Gainesville, Florida and had the good fortune to attend two years of high school in London, England. She graduated from New College of Florida with a BA in Humanities and moved out to Seattle to pursue her love of theater. There she worked in many aspects of the performing arts world including non-profit development, marketing and administration, and was Executive Director of Seattle Fringe Theatre Festival for many years. Kibby attended the Victoria College of the Arts at the University of Melbourne where she earned a Graduate Diploma in New Performance Making, then returned to Seattle and lived in cohousing and other intentional communities. She found Waldorf Education while looking for the right school for her first son,Theo. Kibby received her Waldorf Grades Teacher Training at Sound Circle Center, Seattle, during which time she was a Games Teacher at Madrona School on Bainbridge Island, WA, for three years. She joined Summerfield in 2011, and is grateful that her two sons, Theo and Will, have the opportunity to be in school here.
Phone: (707) 575-7194 Ext: 348
Saskia Pothof, Farm Classroom
Saskia was born and raised in the Netherlands. After she completed her Masters Degree in Child Psychology, she worked for eight years in long-term foster care. An encounter with a dolphin in Spain sparked her interest in research on communication with wild dolphins, and in the following years she swam in many oceans with different species of dolphins. In 1993 Saskia moved to the United States to live with her husband and was glad to discover the flourishing Waldorf community in this area. Saskia completed the Waldorf teacher training at the Center for Educational Renewal in the spring of 2002, and became our first grade teacher at Summerfield in the fall of that year. Saskia served as a class teacher at Summerfield for sixteen years, and after graduating her second class in June 2018, she now shares her love for art, singing, and teaching as a specialty teacher in the grades in Lower School, and in Teacher Training. Her daughter, Dawn, graduated from Summerfield High School in 2012.
Phone: (707) 575-7194 Ext: 304
Patricia Walker, Class Eight
Tricia holds a Bachelor of Arts degree in Education, a Supplemental Art Credential and a K – 12th Grade Teaching Credential in both California and Washington. She holds a Waldorf Teaching Credential from The Center For Educational Renewal as well. After teaching kindergarten, first, second and sixth grade in the public elementary schools, she realized she wanted to teach children in a new way. She searched out Waldorf Education, went through a four year training, and began teaching in Waldorf schools in 1999. She took her first class at the Seattle Waldorf School. Later she taught at The Waldorf School of Mendocino County and in 2007 took a class at Summerfield. She graduated a class of 33 students in 2015 and is now in her second eight year cycle. Tricia has two sons who graduated from Summerfield and are pursuing their college degrees in Computer Science and Nursing. When her children were very young she opened a Waldorf-inspired preschool in her home and enjoyed introducing parents to Waldorf education. She still enjoys educating others about Waldorf education and taught in The Center for Educational Renewal teaching program. Tricia works with practicum students every year so she can pass on her love of teaching and children. Her other passions are playing piano, guitar and ukulele. She enjoys watercolor painting and her final project for the Waldorf credential program was on the study of color based on Goethe’s and Steiner’s color theory. She ran a half marathon in spring of 2011 and hopes to do that again some day.
Phone: (707) 575-7194 Ext: 307
Angie Brown, LS/HS Practical Arts
Angie is a practicing professional ceramic artist. She earned a BFA from California College of the Arts. At Summerfield she will be teaching pottery on the wheel and coil pots in the high school. She will teach seventh grade clay sculpture, and, together with Ken Smith, teach the clay bust self-portraits with the senior class. Angie will collaborate with Isabel Wundsum to bring acrylic painting to the eleventh grade. Stop by and say hello to Angie in the pottery!
Barbara Kobabe, LS Practical Arts & Handwork
Barb joined the Summerfield Community as a parent in 2003. She began volunteering on the farm with the farm guild the following year. In 2006, she began assisting in lower school handwork classes, and over the years has assisted, volunteered and taught in lower school and high school handwork classes. Barb completed her Waldorf Teacher Training with the Center for Educational Renewal in 2012. Barb loves sharing her life long passion of all things handwork with the students.
Farming

Gabriel Markel, LS Farming Teacher
Gabriel grew up in Southern California attending the San Diego Waldorf School through the fifth grade before his family relocated to Portland, Oregon. From sixth grade onwards he then attended and graduated from the Portland Waldorf School.
After high school Gabriel moved back east to upstate New York to do volunteer work for one year with people with special needs with the organization inspired from and born out of Anthroposophy known as Camphill. It was there that he really realized and acknowledged his love for farming and gardening and ended up staying for almost five more years working in the gardens and farms of Camphill along with studying social therapy. After almost a year of traveling and working on different farms in the United States and Europe Gabriel applied to the farm here at Summerfield. Alongside farming, he is very passionate about sports and hope to be involved with the Summerfield basketball program. He is also looking forward to continuing his work in Anthroposophy, biodynamic agriculture, social therapy and education here at Summerfield.
Ronni Sands, Middle School Practical Arts, HS Farming & Gardening
Ronni has been a farming and gardening teacher at Summerfield Waldorf School and Farm since 1993. She studied for two years at the Waldorf Institute of Detroit and completed a two-summer apprenticeship in biodynamic gardening with Alan York and Hilmar Moore. She also received a B.A. in Theatre Arts. She has worked with handicapped adults on a dairy farm, helped run a five-acre organic market garden and worked part-time as a landscaper. She taught kindergarten in the Portland Waldorf School for five years. She teaches High School gardening, herbal studies, cooking, basket weaving and permaculture.
Phone: (707) 575-7194 Ext: 149
Michel Sellors, LS Specialty Teacher
Isabel Vallejo, LS/HS Spanish
Isabel was born and raised in a small village in Valladolid, Spain. She received her Masters degree in Law at the University of Valladolid, then worked with the Spanish Tax Agency for more than ten years in Barcelona, Madrid, Toledo and Athens. She moved to the USA twelve years ago following her husband, with whom she has two children. She taught Spanish as a substitute at Sonoma Academy before joining the Summerfield faculty.
Isabel Wundsam, LS/HS Music, Art,& German Instructor
Isabel has been teaching for 42 years—having taught piano privately and in a music school in Germany. She studied piano with Udo Falkner and Chamber music at the Conservatory of Music in NRW, Germany. She has a degree in Visual Communication. In 1990 Isabel moved to the US. Since then she has taught music, art and German, and has worked at Summerfield since 1998 and studied under several master teachers to become a better Waldorf teacher. “Some of my most important teachers are the students whom I teach and learn with.” Since 2005, Isabel has been studying the recorder flute with performer Frances Blaker in the East Bay and performs around the Bay Area and in Southern California.