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executive director

Jacque Grillo
Director and Teacher

Jacque is originally from the North Shore of Boston and has lived in San Francisco since 1977. He holds a BS degree in Human Development, with a specialty in Early Childhood, from the University of Massachusetts. Jacque also holds an MA in Counseling Psychology from John F. Kennedy University and California Teaching Credentials. His first teaching job was in a laboratory preschool at Harvard University. Jacque has been at Lone Mountain since 1977. In addition he is licensed as a Marriage and Family Therapist (MFT), and for over twenty-five years had a private counseling and psychotherapy practice. Jacque has been the school’s Director since 1996.


Patty Cotter
Teacher, Pre-K Class

Originally from Chicago, Patty attended Bradley University in Peoria, Illinois and received a B.S. in History. After moving to New York City, she worked for three years as an infant teacher at a Bright Horizons. During this time, Patty obtained her M.S. from Brooklyn College in Early Childhood Education. She then became a head teacher in a preschool class at The Olive Treehouse Group. Patty lived and worked in Brooklyn until her relocation to San Francisco in 2014. This is Patty’s seventh year at Lone Mountain.

Deborah Crosby
Teacher, Pre-K

Deborah’s prior teaching experience includes three years at St. Luke’s Preschool in San Francisco, and fifteen years at the Rosenberg Center, a full-day, full-year program, where she was the Pre-K teacher and interim Director for a year. Deborah retired in July 2020 from full- time teaching after twenty-two years at Lone Mountain, but is looking forward to being with the Pre-K children for part of each school day.

Cissy Harris
Teacher, M-W-F Class

Cissy holds a BA degree from UC Berkeley in Art and History, and an Elementary Teaching Credential from San Francisco State University. She has taught previously in public and private schools in Marin and San Francisco. Cissy has taught at Lone Mountain since 1988.

Evalynna Ho
Teacher, M-W-F Class

Evalynna has a BA in Art History from UC Santa Barbara and has taken several child development classes to deepen her knowledge in the early childhood education field. She has been a teacher for over 10 years, working at St. James Preschool and the Little School. This is Evalynna’s fifth year at Lone Mountain.

Thuy Huynh
Assistant Teacher, M-W-F Class

Thuy was born in Vietnam and moved to San Francisco in 2003. Thuy received an AA degree in Art and Humanities in 2012 at City College of San Francisco. After having her second child, she discovered her love for working with young children. She finished her ECE Associate Teacher courses and continues taking Child Development classes. This is her third year at Lone Mountain.

Sophia Lau Kayasone
Teacher, MWF Class and part-time Admin Assistant

Sophia attended San Jose State University and graduated with a BA in Child and Adolescent Development in May 2005. As a student at SJSU she worked as an assistant teacher at their Child Development Center. Before coming to Lone Mountain Sophia worked as a team teacher at Marin Day Schools/Bright Horizons in Foster City. This is Sophia’s fourteenth year at Lone Mountain.

Laura Maxwell
Teacher, Pre-K Class

Laura grew up in Chapel Hill, North Carolina. She attended UNC Chapel Hill and received her B.A. in Psychology in 2011. During her undergraduate studies, she taught at a local cooperative preschool where she continued to teach full time after graduating. After moving to San Francisco in 2013, she taught preschool part-time while pursuing her graduate degree from San Francisco State University. She was awarded her M.A. In Early Childhood Education in 2015 and this is her fifth year at Lone Mountain.

Rosemary Medeiros
Teacher, M-W-F Class

Rosemary is beginning her eighth year at Lone Mountain. She is originally from Winchester, Virginia. She moved to San Francisco in 2003 where she attended SFSU and received her BA in Broadcasting. She recently received her MA in early childhood education at SFSU. She has been working with young children for nine years. Before teaching at Lone Mountain, she was a teacher at Little Wonders Montessori Too. Rosemary loves music and plays guitar and ukulele both with the children and in her spare time.

Bernadette Quattrone
Teacher, M-W-F Class

Bernadette received a B.S. in English from the United States Naval Academy and a M.A. in Early Childhood Education from New York University. She is also a certified Music Together teacher with three years of experience teaching the program. Bernadette has eight years of experience in the preschool setting as the head teacher at Parker’s Place Preschool in Brooklyn and the director and head teacher at Skyline Preschool in Oakland. This is her third year at Lone Mountain.

Arlete Rezende
Assistant Teacher, Pre-K Class

Arlete is originally from Brazil, and moved to San Francisco in 1992. She has a degree in Languages and Literature, and a teaching permit in Early Childhood Education. Arlete is multilingual in Spanish, Portuguese and English. Arlete has been at Lone Mountain for seven years. Before moving to San Francisco she taught 5th and 6th grade and high school. Some of her favorite things to do are to go for hikes, walks, reading, watching movies, and traveling around the world with her husband Steve.

Ella Seibel
Teacher, Pre-K Class

Ella was born and raised in Lawrence, KS. She earned a Bachelor’s degree in Human Development and Family Life, with an emphasis in Early Childhood Education from the University of Kansas in 2005. After receiving her degree, she started her teaching career as a lead teacher at a Montessori preschool in Lawrence. She stayed in this position for six years, before going back to school and earning a Master’s in Early Childhood Education. She has been a preschool teacher for fifteen years. This is her eighth year at Lone Mountain.

Shaun Spring
Teacher, Pre-K Class

Shaun was born in Honolulu and was raised in San Jose. He attended San Francisco State University and graduated in 2009 with a Bachelor's degree in History. Shaun has completed a number of child development classes and continues to take more classes to strengthen his skills as a teacher. Shaun has taught at The Stonestown Family YMCA summer camp, as an associate teacher for the YMCA preschool, and as an after school teacher at Commodore Sloat Elementary School. Before coming to Lone Mountain Shaun taught at Marin Day Schools/Bright Horizons Sherith Israel Campus in a class of 3-4 year olds. This is Shaun’s eighth year at Lone Mountain.

weekly teaching specialists

Bhumi B. Patel
Dance Instruction, Pre-K Class

Bhumi B. Patel is a dancer, choreographer, educator, writer, curator, and historian. She is on faculty at West Valley College for technique and composition, teaches Creative Movement with the Nancy Karp + Dancers School Program at Anna Yeats Elementary, and teaches Pre-Ballet, Ballet, and Modern with the Youth Program at Shawl-Anderson Dance Center. She is excited to begin her first year as a teaching specialist at Lone Mountain Children's Center.

Marci Briskin
Gymnastics Teacher, M-W-F Class, My Gym Children's Fitness Center

Marci Briskin is the owner of My Gym Children's Fitness Center. She holds a BA from University of Wisconsin. She opened My Gym Children’s Fitness Center eleven years ago. My Gym offers noncompetitive gymnastics mixed in with movement and dance. Marci has offered weekly movement instruction at Lone Mountain since 2011.

Playball San Francisco
Outdoor Sports Program, Pre-K Class

Dee Dee Bundy is the owner of Playball San Francisco which teaches the basic skills for six different sports including soccer, baseball, volleyball, basketball, hockey, and tennis. The program is non-competitive in nature and emphasizes the importance of life skills such as courage, flexibility and persistence. This is Playball’s sixth year at Lone Mountain.

Maggie Mickaili
Spanish Instructor, Pre-K Class

Maggie is a native San Franciscan, raised in a Spanish speaking home. She has 16 years of extensive experience teaching in both English and Spanish to children ages toddler through elementary. She has designed and implemented Spanish music and movement programs throughout the Bay Area. Her experience includes having worked as Lead Teacher and Director/Administrator of a language immersion school. Her goal is for her students to be excited about speaking another language and have lots of fun in the process! This is Maggie’s second year at Lone Mountain.

Shun Shifu Eric Mitchell
Martial Arts Instructor, Pre-K Class

Shun Shifu Eric Mitchell began his martial arts training at the age of 10 and discovered his passion for the art of Kung Fu. This combination of passion and commitment to traditional Chinese Martial Arts (Kung Fu, Tai Chi, self-defense) is demonstrated in his adherence to teaching for the benefit of his students of all ages. This is Shun Shifu Eric Mitchell’s fifth year at Lone Mountain.

Andrew Skewes-Cox
Music Teacher, M-W-F and Pre-K Classes

Andrew is a native San Franciscan. In 2006 he earned his degree in Music from the University of California Santa Cruz. He has been teaching music in the Bay Area ever since. This is Andrew's eleventh year at Lone Mountain.

Tree Frog Treks
Science and Nature Instruction, Pre-K Class

Tree Frog Treks teaches fun interactive in-school science enrichment programs that introduce kids to concepts in biology, chemistry, physics, earth sciences and natural history. Tree Frog Treks allows children to meet live reptiles and amphibians face-to-face. The themed curriculum cover integrated science topics and reinforces learning through hands-on science experiments, art projects, movement and song. All the Tree Frog Treks lead teachers have college degrees, many have Master's degrees, and all have been thoroughly trained in the curriculum and how to introduce children to live reptiles and amphibians. This is Tree Frog Treks sixth year at Lone Mountain.