Adventure Time Extended Day Care
John G. Mattos Elementary School, 21201 Independent School Road, Castro Valley, CA 94552
About
Adventure Time Extended Day Care offers activities such as science projects based on curriculum from the Lawrence Hall of Science at the University of California Berkeley, hands-on experiments, and practical learning that use observation, analysis, and deduction. Children take part in sports and physical activity programs that include team building, cooperation, dance, music from many cultures, cooperative and non-elimination games, and an outdoor motor skills program that focuses on team effort and good sportsmanship. The program also includes arts and crafts, language arts, music, art, drama, games, cooking, computer time, swimming, field trips and workshops, Friday Chef Days, weekly themes, and special events with special guests and learning specialists who introduce activities in areas such as animal behavior, magic, and discovery.
• Ages: 4–12 years old
• Schedule: Open 7:00 a.m. – 6:00 p.m. with weekly enrollment options for 2, 3, 4, or 5 half-day or full-day sessions
Adventure Time Extended Day Care is a California Licensed program that is fully licensed by the State of California Department of Social Services and exceeds the standards of the California Department of Social Services Community Care Licensing. The program has been serving elementary school-aged children and their families for over 38 years, is described as California Licensed for over 40 years, and notes that it has proudly served families in the Bay Area for over 39 years. Children must be 4 years and nine months old by the first day of attendance, entering kindergarten in the fall, and no older than twelve years during attendance, and the program serves children in grades T-K through 6.
All staff members are over 18 years of age and well trained, and the average teacher to child ratio is 1 to 10. Many of the head teachers and all of the administrative team have been with the organization for over thirty years, and the program describes its staff as experienced, caring Adventure Time teachers who are well-trained and dedicated to providing a positive, memorable experience. The leadership team includes Director Mimi Albert and site leaders such as Site Director Lucy Macias at Independent Elementary School, Site Director Jessica Andrews at Jensen Ranch Elementary School, Site Director Hiyas Kintanar at Proctor Elementary School, Site Director Amanda Faria at Vannoy Elementary School, Site Director Ciara Woolery at Twin Oaks Montessori Elementary School, Site Director Yessica Gonzalez at Ardenwood Elementary School, Site Director Mavi Govea at Glenmoor Elementary School, Site Director Sangita Shah at Maloney Elementary School, Site Director Valina Sanders at Parkmont Elementary School, Lead Teacher Denise Juarez at Niles Elementary School, Site Director Linda Santos at Warwick Elementary School, and Site Director Tammy Brewer at Vallejo Mill Elementary School.
The program’s mission states that Adventure Time Extended Day Care provides a nurturing and welcoming environment before and after school while offering academic enrichment, social development, creative activities, and fun, with a goal of creating a safe, inclusive, and harassment-free space where each child feels valued and supported. The mission further states that the program fosters academic and social growth with activities that stimulate creativity and critical thinking, works to create a foundation for a bright future, and builds a community that celebrates uniqueness and encourages the development of responsible, compassionate, and confident individuals. The mission also states a commitment to diversity, equity, and inclusion, an atmosphere where each child feels valued and respected, and an aim to empower every child to reach their fullest potential, with acceptance, encouragement, respect, and learning described as central to the mission.
The science component is based on curriculum from the Lawrence Hall of Science at the University of California Berkeley, and the program notes an ELOP Expanded Learning Opportunities Program partnership with Fremont Unified School District at certain sites. Summer Day Camp 2026 is described as including “Master Workshops,” special events and visitors, and exciting science projects based on science curriculum from the U.C. Lawrence Hall of Science, with activities centered around bi-weekly themes such as Magical Mixtures, Frontier Adventures, Beyond the Beach, Kids Coming Together, Soaring Into Starry Skies, Treasure Island, Across the Atlas, and Construction Junction. The program also offers academic enrichment, help with homework, relaxation and quiet activities, and activities grouped under Science, Sports & Games, Arts & Crafts, Computers, Swimming, Special Guests, Learning Specialists, Weekly Themes, Friday Chef Days, Field Trips & Workshops, and Special Events.
One parent testimonial states, “AT has got to be one of the best after school and summer programs I have either used, heard about or seen. I love the programs, teachers, director and everything about it. Thank you!”
Last updated June 16, 2026.
• Ages: 4–12 years old
• Schedule: Open 7:00 a.m. – 6:00 p.m. with weekly enrollment options for 2, 3, 4, or 5 half-day or full-day sessions
Adventure Time Extended Day Care is a California Licensed program that is fully licensed by the State of California Department of Social Services and exceeds the standards of the California Department of Social Services Community Care Licensing. The program has been serving elementary school-aged children and their families for over 38 years, is described as California Licensed for over 40 years, and notes that it has proudly served families in the Bay Area for over 39 years. Children must be 4 years and nine months old by the first day of attendance, entering kindergarten in the fall, and no older than twelve years during attendance, and the program serves children in grades T-K through 6.
All staff members are over 18 years of age and well trained, and the average teacher to child ratio is 1 to 10. Many of the head teachers and all of the administrative team have been with the organization for over thirty years, and the program describes its staff as experienced, caring Adventure Time teachers who are well-trained and dedicated to providing a positive, memorable experience. The leadership team includes Director Mimi Albert and site leaders such as Site Director Lucy Macias at Independent Elementary School, Site Director Jessica Andrews at Jensen Ranch Elementary School, Site Director Hiyas Kintanar at Proctor Elementary School, Site Director Amanda Faria at Vannoy Elementary School, Site Director Ciara Woolery at Twin Oaks Montessori Elementary School, Site Director Yessica Gonzalez at Ardenwood Elementary School, Site Director Mavi Govea at Glenmoor Elementary School, Site Director Sangita Shah at Maloney Elementary School, Site Director Valina Sanders at Parkmont Elementary School, Lead Teacher Denise Juarez at Niles Elementary School, Site Director Linda Santos at Warwick Elementary School, and Site Director Tammy Brewer at Vallejo Mill Elementary School.
The program’s mission states that Adventure Time Extended Day Care provides a nurturing and welcoming environment before and after school while offering academic enrichment, social development, creative activities, and fun, with a goal of creating a safe, inclusive, and harassment-free space where each child feels valued and supported. The mission further states that the program fosters academic and social growth with activities that stimulate creativity and critical thinking, works to create a foundation for a bright future, and builds a community that celebrates uniqueness and encourages the development of responsible, compassionate, and confident individuals. The mission also states a commitment to diversity, equity, and inclusion, an atmosphere where each child feels valued and respected, and an aim to empower every child to reach their fullest potential, with acceptance, encouragement, respect, and learning described as central to the mission.
The science component is based on curriculum from the Lawrence Hall of Science at the University of California Berkeley, and the program notes an ELOP Expanded Learning Opportunities Program partnership with Fremont Unified School District at certain sites. Summer Day Camp 2026 is described as including “Master Workshops,” special events and visitors, and exciting science projects based on science curriculum from the U.C. Lawrence Hall of Science, with activities centered around bi-weekly themes such as Magical Mixtures, Frontier Adventures, Beyond the Beach, Kids Coming Together, Soaring Into Starry Skies, Treasure Island, Across the Atlas, and Construction Junction. The program also offers academic enrichment, help with homework, relaxation and quiet activities, and activities grouped under Science, Sports & Games, Arts & Crafts, Computers, Swimming, Special Guests, Learning Specialists, Weekly Themes, Friday Chef Days, Field Trips & Workshops, and Special Events.
One parent testimonial states, “AT has got to be one of the best after school and summer programs I have either used, heard about or seen. I love the programs, teachers, director and everything about it. Thank you!”
Last updated June 16, 2026.
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