Who we are

Our team

SOL is built by educators and families who believe in a different kind of school — one rooted in community, nature, and the real world.

Mariana Castilla

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

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

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

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

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

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

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

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

Itziar Arzac

Preschool · Margays

Itzi teaches SOL’s youngest students with presence, play, and carefully prepared days for the Margays class.

Annie Glazebrook

Annie Glazebrook

Preschool · Margays

Annie is a calm, kind preschool teacher whose warmth helps every child feel seen and cheered on.

Silvia Castilla

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

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

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

Gabriela Rosales Castillo

Campus care

Gabriela helps keep the campus clean, organized, kind, and dependable.

Jessica St. John

Jessica St. John

Equestrian Club

Jessi teaches horse care with patience, giving students time to connect with the animals.

Isabel Castro

Isabel Castro

Ocean workshops

Isa teaches marine ecosystems and ocean care — sharks, manta rays, and Costa Rica’s biodiversity.

Jocelyn Vondracek

Jocelyn Vondracek

Fashion design & marketing

Jocelyn leads fashion design with calm patience, showing students they can make something out of anything.

Sean Mason

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

Caro Herrera

Admin & workshops

Caro runs hands-on workshops — soy candles, natural soap — and keeps learning playful and interactive.

Becca Blackmore

Becca Blackmore

Student support

Becca is always around to help with missions, listen, and take time to talk with students.