Campus Expansion 2025

GISB is growing! Follow us to learn about the upcoming facility improvements at Holton Street in Boston and our new building on Belmont Street in Watertown.

Our existing 57 Holton Street campus, currently home to grades 1-12, will be a dedicated space for middle and high school students, offering them an even more focused and tailored learning environment. The new campus on Belmont Street will be the future home of GISB’s preschool, pre-k, kindergarten, and elementary school programs, giving the school a unique opportunity to have all younger students at one campus.

GISB’s Board of Trustees anticipates that by summer 2025, the Belmont Street campus will be ready to welcome preschool, pre-k, kindergarten and elementary school students. Both buildings will undergo strategic renovations, ensuring that they are equipped to support our evolving educational goals and aspirations.

46 Belmont Street, Watertown

57 Holton Street, Boston

Expansion Updates