Students, parents and staff packed into Cornerspring Montessori School’s Hatley Road space June 9 to celebrate the last day of classes, as well as to mark the end of an era as the school moves into its new space this summer.

Since its founding in 2001, Cornerspring has moved from the corner of Congress and Spring streets to its current space on athenahealth’s campus, which it has occupied since 2008. However, the school’s new building on Congress Street is almost complete and will begin to be occupied this summer, Susan Beemer, head of school, said.

The new school at 256 Congress St. will be the first passive Montessori school in the state, built to the international passive house building standard for energy efficiency. Once completed, the $1.18 million-facility will include primary and elementary wings, four classrooms, a toddler program room, all-school multi-use spaces, a teacher conference room and administrative offices. The school will also begin offering a full-time toddler program.

Former and current students from various points in the school’s history were invited to participate in the ceremony, which concluded with everyone in attendance blowing bubbles.

A four-week summer camp will be offered starting July 17 at the new Congress Street location. A housewarming and ribbon-cutting ceremony is scheduled for Sept. 30.