Mariana Castilla
Founder & Director
With over 12 years in alternative education, Mariana builds socio-ecological impact through Project-Based Learning, Conscious Discipline, and the Reggio Emilia approach. She grew up in Guanacaste and studied Bilingual Education and Biological Sciences.
Amanda Santangelo
Founder & Director
An educator for eighteen years across traditional, PBL, Waldorf, and Montessori spaces. A mathematician at heart, she lived in the US and Argentina before settling in Costa Rica to help build SOL.
Abby Karparis
Permaculture Teacher
Abby reconnects students with the earth through food, farming, and regenerative design, grounded in the first permaculture principle: observe and interact.
Antonio Vargas
Life Skills Teacher
A Costa Rican educator and project manager passionate about permaculture, survival skills, sustainable construction, and learning by doing.
Sascha O'Neill
Herbalism, Theatre & Kombucha
Sascha brings herbalism, fermentation, theatre, and years of mentorship with children and families. She believes children learn best when connected to the earth, community, and themselves.
Stephanie Riley
World Studies & ELA
Stephanie has taught in Thailand, China, Turkey, the United States, and Costa Rica. She educates the whole child through curiosity, empathy, and respect.
Naia Aguilo
Math & Music
A teacher and music therapist from Bilbao who uses music for connection, regulation, and learning, with deep respect for each child’s rhythm.
Diana Lopez Prendas
Art & PE
Multidisciplinary artist teaching Art, Spanish II, PE, and after-school art. She chose Guanacaste to create close to nature.
Itziar Arzac
Preschool · Margays
Itzi teaches SOL’s youngest students with presence, play, and carefully prepared days for the Margays class.
Annie Glazebrook
Preschool · Margays
Annie is a calm, kind preschool teacher whose warmth helps every child feel seen and cheered on.
Silvia Castilla
Jaguarundis · ELA & Spanish
Silvia is an empathetic, funny teacher who makes children feel at home. Her favorite hobby is floating in the ocean.
Netta Moyal
Chef
Netta cooks the meals that sustain the school, teaches students to prepare food, and invites everyone to try something new.
Aydalina Jiron Soza
Campus care
Ayda has kept the school clean for a long time, always helping and joking with the kids.
Gabriela Rosales Castillo
Campus care
Gabriela helps keep the campus clean, organized, kind, and dependable.
Jessica St. John
Equestrian Club
Jessi teaches horse care with patience, giving students time to connect with the animals.
Isabel Castro
Ocean workshops
Isa teaches marine ecosystems and ocean care — sharks, manta rays, and Costa Rica’s biodiversity.
Jocelyn Vondracek
Fashion design & marketing
Jocelyn leads fashion design with calm patience, showing students they can make something out of anything.
Sean Mason
Jiu jitsu & skate PE
Sean teaches jiu jitsu through games, breathing, and discipline, and leads Skate PE at the local park.
Caro Herrera
Admin & workshops
Caro runs hands-on workshops — soy candles, natural soap — and keeps learning playful and interactive.
Becca Blackmore
Student support
Becca is always around to help with missions, listen, and take time to talk with students.