Mark Day School
39 Trellis Drive
San Rafael, CA 94903

Extended Day Programs

The Extended Day Program offers a variety of options that contribute to student enrichment and flexibility for family scheduling. For more information, please contact Program Director Savannah Guinn. Prospective families learn more about these programs during the admissions process from Director of Admission Katie Kelso.

The After School Club (ASC)

The After School Club (ASC) provides a safe, fun, inclusive after-school environment for Mark Day School students K-8 to create, play, relax, and engage as kind and conscientious members of our community. The ASC provides opportunities for both structured and self-directed activities across all grade levels. Students are encouraged to be creative and innovative, kind and curious as they engage in outdoor play and sports, arts, crafts and various projects throughout the year. The ASC is a drop-in program. Snacks are provided.


Morning Care: Monday - Friday, 7:30-8:20am
Afternoon Care: Monday - Thursday, 2:30-6:00pm; Friday, 1:15-6:00pm

*Note: Kindergarten students are welcomed in the ASC from 2:30-3:10pm free of charge.


The After School Club costs $10 per hour. For families participating in the Indexed Tuition program, the hourly rate will be adjusted according to placement on the Index.

During the 2023-2024 school year, the ASC will close at 4:00pm on the following dates:  

8/29 (Opening Day), 11/14, 12/13 and 6/12 (Closing Day). 

Adventures After School

Mark Day School offers a wide range of after school enrichment courses to serve varying student interests through our Adventures After School (AAS) program in the fall, winter and spring. All courses are held on campus and offer students opportunities to learn a new skill or hobby, challenge themselves, and build self-confidence in a fun, supportive, and safe environment.

Courses are taught by experienced and talented Mark Day School teachers and by partners and friends in the wider community. Classes meet once per week for 8 - 12 weeks, for about one hour per class. The Adventures After School program is open to Mark Day School students as well as students from other schools. For course information or to register for a course, please follow this link.

Special Event Care

Special Event Care is available on certain days when school is otherwise closed, like parent/guardian-teacher conferences, professional development days, and faculty work days. Advanced registration is required for these events, as space is limited, and lunch is provided. Families will be notified in advance to join the lottery for each event here. Our Indexed Tuition policy includes coverage for curricular and co-curricular events, including Special Event days.

During the 2023-2024 school year, the ASC will be available on the following special event dates:  

10/16, 11/1, 11/2, 3/11 and all Early Dismissal Days.

Summer at Mark Day School

Mark Day School offers a variety of vibrant and innovative summer camps filled with creativity, recreation, academics, and fun for students. Our summer camps serve students entering 1st grade through 8th grade. Whether you're interested in science, volleyball, tinkering, sports or performing arts, each camp day at Mark Day School is filled with extraordinary experiences to learn and play! Join us for a summer full of exploration, friendships, and fun! Summer at Mark Day School is open to Mark Day School students as well as students from other schools. For summer camp information or to register for a summer camp, please follow this link.

For all questions related to After School Club, Adventures After School or Summer Programs, please contact Savannah Guinn, Director of Extended Day and Summer Programs, at