Our Additional Programs

Additional School Care (ASC) follows basic Montessori principles in terms of encouraging children to help and teach one another, to follow projects through to completion, to create their own activities, and to care for their environment.

With some restrictions, parents can choose to have their children participate in ASC through Full-year Package ASC, Reserved ASC, or Drop-in ASC. Check out the details below.

 

Each semester, we offer Bayside Afternoon Classes for Full-Day Primary (4 years old and older) and Elementary students. 

The Registration Lottery for Fall 2025 classes opens on Friday, May 23, and closes on Friday, March 30 at 8:30 am. 

Spring BAC starts the week of September 15, 2025.

Once you have registered and your child has been selected through the BAC Lottery on May 30, 2025, your enrollment is considered final. By completing registration, you are committing to full payment for the class, and invoices will be sent out on May 30, 2025.

Refunds will not be issued once registration is confirmed on May 30, 2025.

Be sure to register for each class separately. For more about the lottery system, click the tab above.

How To Register

1. Log into your Parent Portal.

2. Go to the “Extended Care” tab.

3. In the “Participants” sub-tab, select your child's name for the correct BAC session and click "View Signups."

4. On the next page, make your BAC selection(s).

How to Opt Out or Cancel a BAC Session

1. Log into your Parent Portal. 
2. Go to the “Extended Care” tab.
3. In the “Participants” sub-tab, select your child's name for the correct BAC session and click "View Signups."
4. On the next page in the Session Calendar, click on the day(s) you wish to cancel and select “Opt Out.”

Fall 2025 Options

Primary

Outdoor Adventures with Kathy |for Full-Day primary children 4-6 years old

• Tuesdays, 3:00-4:00 pm

• 8 sessions: September 16, 23, 30, October 7, 14, 21, 28, November 4

• Class minimum/maximum: 6/12

• Registration: $375
  
  Join us for an engaging outdoor class where children explore their surroundings through a variety of sensory experiences. We'll set off toward Ring Mountain, collecting small treasures along the way for discussion. This class offers a chance for children to relax in nature and connect deeply with their environment, listening, feeling, smelling, and observing. 
  
  Children are welcome to bring a snack to enjoy before class. Please wear sturdy shoes and bring a hat, a water bottle, and comfortable clothing that can get dirty.  
  
  Kathy Winkler has been teaching young children for over 20 years. She is currently the Movement Specialist at MMS and previously taught Kindergarten for 16 years. She holds a BA in Economics from UC Davis and a Multiple Subjects Credential from UOP. Passionate about the outdoors, Kathy enjoys trail running, ocean swimming, paddleboarding, and yoga. For questions, contact Kathy at kwinkler@marinmontessori.org.

Mini Camps In Action with Nova |For Full-Day Primary children 4-6 years old

• Tuesdays, 3:00-4:00 pm

• 8 sessions: September 16, 23, 30, October 7, 14, 21, 28, November 4

• Class minimum/maximum: 6/12

• Registration: $375
  
  In this exhilarating multi-week series, kids will dive into the exciting world of sports, exploring a variety of games and activities designed to build their athletic skills. From soccer to basketball, and track to gymnastics, they'll get a taste of it all while enjoying non-stop fun with friends. In "Mini Champs in Action," children will discover the joy of teamwork, the thrill of setting and achieving goals, and the confidence that comes with staying active and healthy. Along the way, they'll improve their coordination, agility, and sportsmanship, all while having a blast.

  Nova is a multifaceted professional who excels in both martial arts and creative design. A dedicated Brazilian Jiu-Jitsu practitioner, Nova loves sharing her passion with children aged 4–8, fostering empowerment and physical fitness in her youth classes. Beyond jiu-jitsu, she has designed and implemented comprehensive youth sports programs in basketball, soccer, volleyball, and more, inspiring young athletes across various disciplines. With a bachelor's degree in Graphic Design, Nova also mentors aspiring creatives and volunteers regularly at her children's elementary school, assisting with art projects. Her unique blend of fitness and art expertise allows her to creatively inspire and challenge kids to be themselves, try their best, and have fun. For questions about the class, please contact Celia at celia@grasshopperkids.com.   

Primary Spanish with Adriana Romo |FOr Full-Day Primary children 4-6 years old

• Wednesdays, 3:00-4:00 pm

• 8 sessions: September 17, 24, October 1, 8, 15, 22, 29, November 5

• Class minimum/maximum: 6/12

• Registration: $375
  
  Our after-school Spanish program immerses children in language learning through engaging, co-curricular lessons. Using fun oral activities for conversation practice and task-based instruction, the class will also emphasize Spanish reading materials. Each session begins with a greeting circle, followed by a story and a lesson. Children will explore age-appropriate songs, projects, and hands-on activities while experiencing authentic Spanish food, music, and traditions. The goal is to foster a love for the Spanish language and its vibrant culture.  
  
  Adriana Romo has eight years of early childhood education experience and holds a degree in Early Childhood Education from Diablo Valley College. She is certified through the North American Montessori Center and discovered her passion for literacy while participating in a program that used Ballet Folklórico—a traditional Mexican dance—to teach Spanish. For the past four years, she has integrated Spanish curriculum into Montessori settings, bringing enthusiasm and joy to language learning. For questions, contact Adriana at aromo@marinmontessori.org.

Rhythm and Dance with Rose | For Full-Day primary children 4-6 years old

• Thursdays, 3:00 - 4:00 pm
• 8 sessions: September 18, 25, October 2, 9, 16, 23, 30, November 6
• Class minimum/maximum: 6/12
• Registration: $375
• Materials fee: $20

Rhythm and Dance is a fun, play-based musical class, where children learn and practice rhythm, language games and dance. Each week builds on a theme, using music from many genres, countries, and rhythm. Using multi-sensory learning to engage gross and fine motor skills, build coordination, we have lots of fun making beats, learning moves, dancing, and singing together!

Rose Martin is a Primary Support Specialist at MMS with over a decade of experience teaching music and movement to preschool-aged children. A certified Kindermusik director, she brings a deep understanding of early childhood musical development. Rose holds a BA in History from the City University of New York and a Master of Architecture from Yale University. For questions about the class, please reach out to Rose at rmartin@marinmontessori.org.

Think Like a Scientist with Chigusa | For Full-Day primary children 4-6 years old

• Thursdays, 3:00 - 4:00 pm

• 8 sessions: September 18, 25, October 2, 9, 16, 23, 30, November 6

• Class minimum/maximum: 6/12

• Registration: $375
  
  Embark on a thrilling expedition into the world of discovery! This series is perfect for curious minds eager to dive into STEM (Science, Technology, Engineering, and Math) adventures. Through hands-on experiments and interactive activities, kids will get to unleash their inner scientist and explore the wonders of the world around them. They'll learn to ask questions, observe patterns, and make exciting predictions. 

  From bubbling concoctions to creative building challenges, each session offers plenty of opportunities for fun and learning. Kids will not only get to discover new concepts but also develop critical thinking and problem-solving skills that will light up their path to future exploration. With their lab goggles on and imagination soaring high, young scientists will have a blast unleashing their curiosity and creativity in a world where knowledge knows no bounds!

  Chigusa loves working with kids, has worked as a children's art teacher for 5 years, and has many passions to share! Among them are jewelry-making, key-chain-making, Sumi Calligraphy, painting, gardening, Japanese language and culture, making sushi, and learning about animals and the outdoors. Chigusa is also a talented athlete, particularly in swimming which she's coached for many years. As a student, she was also a member of the competitive basketball and Kendo (Japanese martial arts) teams. For questions about the class, please contact Celia at celia@grasshopperkids.com.   

Elementary

Lacrosse Skills with Amy   | FOR ELEMENTARY CHILDREN (1ST-6TH YEAR)

• Tuesdays, 3:30 - 4:30 pm 

• 8 sessions: September 16, 23, 30, October 7, 14, 21, 28, November 4

• Class minimum/maximum: 6/16

• Registration: $375
  
  Come play the fastest game on two feet! Lacrosse with Coach Amy is open to all elementary-aged children, offering a fantastic opportunity to learn the FUNdamentals of lacrosse in a fun, creative, supportive, and engaging environment. Coach Amy's expertise and passion ensure an enriching experience for every child. From complete beginners to those with some lacrosse know-how, everyone will build confidence and skills while having a blast!

  Led by the renowned Coach Amy McCleary, Founder & Owner of STICK WITH IT! Lacrosse, three-time World Cup coach and Hall of Fame inductee. This program covers cradling, ground balls, catching, throwing, and shooting through dynamic drills, interactive games, and friendly small-sided situations. Join us for Lacrosse and watch your child thrive on the field! For Inquiries, reach out to Amy McCleary at coachamymccleary@stickwithit.com. To learn more, visit https://www.stickwithit.com

Culinary Exploration with Adeline   |For Elementary Children (1st-6th Year)

• Tuesdays, 3:30 - 4:45 pm  (1 hr 15 Min Class)

• 8 sessions: September 16, 23, 30, October 7, 14, 21, 28, November 4

• Class minimum/maximum: 6/16

• Registration: $375

• Materials fee: $25
  
  This elevated culinary experience is designed to challenge, inspire, and expand the skills of young chefs. Unlike previous culinary offerings with Adeline, this class will introduce a broader range of ingredients, techniques, and flavors. Students will work with components such as meats, spices, and dairy, and explore recipes that may be new or unfamiliar. While this may be an adjustment (especially for more selective eaters) the class will encourage curiosity and create a safe and supportive space for culinary exploration.
  
  Adeline's goal is to help children grow in confidence and creativity in the kitchen, challenge their palates in a fun and approachable way, and to leave class proud of what they've made. A food enthusiast herself, Adeline's passion and enthusiasm comes naturally. She approaches cooking from the heart with her love for culinary exploration and continues to inspire those around her to be adventurous and confident in their own food journey. For questions about the class, contact Adeline at ashrout@marinmontessori.org   

Elementary Spanish with Andrea |FOR ELEMENTARY CHILDREN (1ST-6TH YEAR)

• Wednesdays, 3:30 - 4:30 pm

• 8 sessions: September 17, 24, October 1, 8, 15, 22, 29, November 5

• Class minimum/maximum: 6/14

• Registration: $375
  
  This fall, we’re offering a new format of Elementary Spanish, focused on learning through hands-on experiences. In this after-school class, children will join Andrea to build, experiment, and create. The goal is to provide a natural and immersive environment for language development. The class will integrate elements of science, art, craft, and cultural exploration, encouraging creativity and collaboration. It’s a thoughtful space where children engage deeply, and Spanish becomes part of their process and expression.
  
  Andrea brings over a decade of experience in education, working with children of diverse ages in various roles, including AMI Montessori Guide, Spanish teacher, preschool caregiver, and humanitarian volunteer. Growing up in a family of educators, her passion for teaching began early. She attended an Italian-founded school, where she gained rich, multicultural experiences that shaped her approach to education.
  
  During university, Andrea volunteered in underserved communities, creating libraries and workshops for children and mothers. After specializing in Europe and working in international banking, she was drawn back to her true calling—education. She pursued Montessori pedagogy training and, for the past five years, has taught French and Spanish as an AMI Montessori Guide in elementary education. Passionate about fostering deep connections with children and families, she believes in the transformative power of education to bridge cultures and enrich lives. For questions about the class, contact Andrea at abeltran@marinmontessori.org. 

Wool Explorers with Bridgette |FOR ELEMENTARY CHILDREN (1ST-6TH YEAR)

• Wednesday, 3:30 - 4:30 pm

• 8 sessions: September 17, 24, October 1, 8, 15, 22, 29, November 5

• Class minimum/maximum: 6/14

• Registration: $375

• Materials Fee: $20
  
  Wool Explorers invites children to discover sculpture through the warmth and texture of wool. Using two approachable felting techniques, students will learn to shape natural fibers into three-dimensional forms. Along the way, they’ll explore fabric, embroidery, and mixed media, crafting unique pieces each week while developing fine motor skills, creative confidence, and a deep appreciation for working with their hands.

  Guided by fiber artist Bridgette Turner, students will dive into the world of texture, form, and color through hands-on projects. Drawing inspiration from artists like Nick Cave, Sheila Hicks, and Faith Ringgold, Bridgette blends traditional and contemporary techniques to bring soft sculpture to life. Whether weaving structures, shaping sculptural garments, or crafting abstract forms, she encourages students to tell stories and engage the senses through their work. For questions about the class, contact Bridgette at bturner@marinmontessori.org.

Run Club with Kate |FOR ELEMENTARY CHILDREN (1ST-6TH YEAR)

• Thursdays, 3:30 - 4:30 pm
• 8 sessions: September 18, 25, October 2, 9, 16, 23, 30, November 6
• Class minimum/maximum: 6/14
• Registration: $375
   

Run Club is a high-energy class designed to help children build endurance, confidence, and a lifelong love of movement. Led by Kate, the class will explore the basics of pacing, form, and goal-setting through fun games and trail adventures around campus. Each week, runners will track their progress, learn about the importance of warm-ups and recovery, and develop a sense of self through group runs and team-building activities. Whether sprinting across the field or jogging through the trails of Ring Mountain, this class encourages students to find joy in running while fostering perseverance, focus, and a healthy connection to their bodies.

Kate holds a bachelor’s degree in civil engineering with an environmental emphasis, an Association Montessori Internationale (AMI) Elementary diploma from Montessori Northwest, and a master’s degree in Montessori education from Whitworth University.

Kate began recreational running with laps around her preschool play yard. This progressed to a childhood filled with track and cross country meets and eventually culminated in four years of competition as a heptathlete and middle distance runner at her university. These days, she enjoys leisurely runs and casual road races. Kate’s goal is to share the rewarding experience of going out of your comfort zone, the sense of community that can be found in individual sport, and exercise as an opportunity for meditation and reflection. For questions about the class, contact Kate at kpicanco@marinmontessori.org. 

BAC Class Sign-up Registration

Registration Window: A designated one-week window will be announced for all sessions, during which all participating families can register their children for their desired after-school classes.

Lottery System: Once the registration window closes, a randomized lottery will be conducted for classes with more applicants than available spaces. All registered families for an oversubscribed class will have an equal chance of securing a spot, regardless of when they submitted their registration. You will automatically be placed on the waitlist when you sign up – please ignore your waitlist number. Your waitlist number is not an indication of being signed up. 

Notification: Shortly after the lottery, families will be notified of their child's enrollment status (enrolled or waitlisted).

Waitlist: A waitlist will be established for oversubscribed classes, and enrolled families may choose to add their child's name to the list in case of openings.

We believe this system offers several benefits, including:

Fairer Access: Ensures equal opportunity for all families to secure a spot in their desired classes.

Reduced Stress: Eliminates the need for families to rush and be online at specific times.

Transparency: Provides a clear and predictable registration process.