STS Blog

St. Thomas School is proud to share that fourth-grade math and science teacher Austin Marsh has been selected as a 2026 Grosvenor Teacher Fellow through the National Geographic Society and Lindblad Expeditions.

Chosen as one of just 36 educators from across the United States and Canada, Austin will take part in a two-year professional learning experience centered on exploration, geographic education, and field-based discovery. This summer, he will travel to the Galápagos Islands aboard the National Geographic Endeavour II, where he will engage directly with scientists, naturalists, and expedition leaders while exploring one of the world’s most extraordinary ecosystems.

For Austin, the opportunity reflects the kind of learning he strives to cultivate every day in his classroom.

“I’m looking forward not only to learning from the unique wildlife and geology of the Galápagos, but also to sharing the stories and experiences of this incredible place with my students and the broader St. Thomas School community,” he said.

Known for his engaging, project-based approach to teaching, Austin creates learning experiences that encourage students to ask questions, think critically, and connect their learning to the world around them. His work reflects many of values at the heart of a St. Thomas School education: curiosity, discovery, active learning, and the courage to explore new ideas and perspectives.

The Grosvenor Teacher Fellowship was established by the National Geographic Society and Lindblad Expeditions to support educators in bringing immersive, real-world learning back to their classrooms and communities. Fellows participate in expeditions around the globe and continue their work through educational outreach, collaboration, and curriculum development.

Austin’s selection highlights one of St. Thomas School’s guiding principles: that we are a community of learners where teachers, administrators, staff, parents, and students are all in the process of acquiring new knowledge and skills.   

As part of the fellowship, Austin will share his experiences and learning with the STS community throughout the coming year. You are invited to follow his journey through his Instagram account, @outsidemarsh.

Learn more about the 2026 Grosvenor Teacher Fellowship cohort here.